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WEICHAI WP13 Operation & Maintenance Manual
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WEICHAI WP13 Operation & Maintenance Manual

WEICHAI WP13 Operation & Maintenance Manual

Natural gas engine
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Operation &Maintenance Manual of WP13 natural gas engine
WP13 Natural Gas Engine
Operation &Maintenance Manual
WEICHAI WESTPORT INC.

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Summary of Contents for WEICHAI WP13

  • Page 1 Operation &Maintenance Manual of WP13 natural gas engine WP13 Natural Gas Engine Operation &Maintenance Manual WEICHAI WESTPORT INC.
  • Page 2 Operation &Maintenance Manual of WP13 natural gas engine WP13 Natural Gas Engine...
  • Page 3 Operation &Maintenance Manual of WP13 natural gas engine Foreword The WP13 series natural gas engine is based on the Weichai Power WP13 blue engine series diesel engine and is improved by eliminating the fuel system of the diesel engine and increasing the ignition system of the gas supply system and the corresponding devices.
  • Page 4 The engine shall always be filled with oil of grade specified in this Manual. It is recommended to use the special oil for Weichai gas engine and filter the oil with a special cleaning filter. Each time the engine is started, make sure to check whetherthe filling amount of coolant and oil is proper.
  • Page 5 For inspection and maintenance, please go to the service station designated by Weichai. Spare parts designated by Weichai must be used for maintenance. Weichai will not be responsible for any damage to the engine caused by using the undesignated spare parts.
  • Page 6 Operation &Maintenance Manual of WP13 natural gas engine Precautions before maintenance and repair ● Avoid long-time repeated exposure to the used oil. ● Wear the protective clothing and water-proof gloves, if available. ● Do not put the oil-immersed rag in your pocket.
  • Page 7 Operation &Maintenance Manual of WP13 natural gas engine ● No smoking is allowed during the maintenance, and fire prevention measures should be taken at the site. If the gas tankhas been inflated, the maintenance shall not be done when the vehicle is close to the surrounding open flame.
  • Page 8 Common faults and troubleshooting ..................... 42 Contact us ...............................45 Appendix ..................................46 (A) Q/WCQTG0011 "Specification of Replacement of Gas Filter Element of Weichai Natural Gas Engine" 错误！ 未定义书签。 (B) Q/WCQTG0070 "Specification of Fault Diagnosis and Maintenance of Wastegate control valve" ....48 (C) Q/WCQTG0071 "Specification of fault diagnosis and maintenance of Weichai oxygen sensor"...
  • Page 9 Operation &Maintenance Manual of WP13 natural gas engine Description of the illustration Dismounting Oil coating Special tools，such as： Fitting S K……，KUKKO……， TS……W Marking (do before disassemble，adjust Pay attention to assembly direction when assemble) Filling-full charge(such as Deflating lubricating oil， cooling water etc.)
  • Page 10 Operation &Maintenance Manual of WP13 natural gas engine Structure and performance parameters of natural gas engine 1.1 Meaning of natural gas engine model Variant number Emission level (China Ⅴ) Engine model (hp) Nautral gas Displacement, 13 L Power Weichai...
  • Page 11 Operation &Maintenance Manual of WP13 natural gas engine 1.2 Outline drawings of WP13 natural gas engine Fig. 1-1 Profile drawing of WP13 natural gas engine...
  • Page 12 Operation &Maintenance Manual of WP13 natural gas engine 1.3 Technology and performance parameters of natural gas engine WP13 natural gas engine power range is 301-316kW, and rated speed is 1900r/min respectively. Table 1-1 Main technical parameters of WP13 natural gas engine...
  • Page 13 Operation &Maintenance Manual of WP13 natural gas engine Idle r/min speed Max. 1750 2000 torque Max. r/min 1200-1500 torque speed Emission China Ⅴ/Euro Ⅴ(with oxidation catalyst) level Table 1-3 Main specifications of accessories No. Name Item Technical parameters Part number...
  • Page 14 Operation &Maintenance Manual of WP13 natural gas engine No. Name Item Technical parameters Operating ambient -40°C-120°C temperature Part number 13055650 Max. operating High pressure gas filter 248bar pressure (CNG) Operating -40°C-107°C temperature Part number 1000083008 Exhaust relief valve Operating ambient -40°C-125°C...
  • Page 15 Operation &Maintenance Manual of WP13 natural gas engine No. Name Item Technical parameters Operating method Continuous operation Total piston displacement(cm³) Min. speed(rpm/min) Max.speed(rpm/min) 3200 Flow (direction of Hydraulic pump (optional) 15.77 rotation) (L/min) Oil inlet thread M26×1.5 internal thread Oil outlet thread M18×1.5 internal thread...
  • Page 16 Operation &Maintenance Manual of WP13 natural gas engine FMV gas 22mm 57-59 N•m connector wrench Note: ① indices value is allowable tolerance. ② Angle value shall be re-screwed angle after screwing to specified torque. ③ Value before angle value is the times for turn angle.
  • Page 17 Operation &Maintenance Manual of WP13 natural gas engine d.As fig 1-3 shows, tightening main bearing bolts to another 90° angle in order, reach to 240~340 N•m simultaneously. Main structural features of natural gas engine ● One cylinders and one cover, reliable, easy to disassemble.
  • Page 18 Operation &Maintenance Manual of WP13 natural gas engine Introduction of structure and system of natural gas engine Gas system 2.1.1 Introduction of fuel supply system 1. Gas circuit (CNG gas source) natural gas tank → high pressure filter →pressure regulator →(low pressure filter →...
  • Page 19 Operation &Maintenance Manual of WP13 natural gas engine Fig. 2-1 High-pressure filter ◆ Technical parameters Max. operating pressure: 248bar Flow rate: 425lpm @690kPa Operating temperature: -40°C-107°C Clean Pressure drop: 20.68kPa Sumpcapacity: 22ml Replacement filter element No.: 612600190763 Installation requirements: ●...
  • Page 20 Operation &Maintenance Manual of WP13 natural gas engine ◆ Technical parameters: Gas inlet operating pressure: (15-260)bar Operating temperature: -40°C～120°C Inlet gas temperature: -20°C～60°C Coolant temperature: -20°C～100°C Solenoid coil rated voltage: 24V Rated gas flow: 40kg/h The pressure regulatoris equipped with Φ8 high-pressure pipe, ferrule and ferrule connector.
  • Page 21 10bar, otherwise the system error may occur; ● OEM and user may not arbitrarily adjust the pressure stabilizer outlet pressure, and the hardware damage due to the pressure regulation without permission will not be undertaken by Weichai;...
  • Page 22 OEM can decide whether to use the mounting bracket contained in Weichai engine according to the vehicle's requirements. If there are special requirements for the installation position and method, Weichai should be notified of that and a decision should be made by Weichai and OEM after consultation.
  • Page 23 Operation &Maintenance Manual of WP13 natural gas engine ◆ Technical parameters Operating voltage 18V-32V; Peak current per nozzle 3.0A, holding current 0.75A~1.0A; Operating inlet pressure range:5bar~10bar absolute; Operating temperature: -40°C～130°C; Gas temperature: -40°C～90°C; Installation requirements: ● FMV should be installed at a reasonable and reliable position;...
  • Page 24 Operation &Maintenance Manual of WP13 natural gas engine Electronic controldiagram Fig. 2-8 Diagram of electric control system (6.0 system)
  • Page 25 Operation &Maintenance Manual of WP13 natural gas engine Operating principle and precautions of electronic control system components The electronic control system consists of wire harness, ECM, ICM, water temperature sensor, oil pressure sensor, inlet temperature and pressure sensor, phase sensor, speed sensor, humidity sensor, oxygen sensor, electronic accelerator pedal, electronic throttle, Wastegate control valve, ignition coil, spark plug and so on.
  • Page 26 Operation &Maintenance Manual of WP13 natural gas engine ● The starter should be protected from high temperature, and the allowable temperature on the housing should be no more than 100°C; ● If the driver fails to monitor the start-up process (for example, the commercial vehicle with rear engine mounted), a starter relay must be installed to protect the starter from tooth engagement.
  • Page 27 Operation &Maintenance Manual of WP13 natural gas engine achieving electronic control against the engine. WOODWARD OH6.0ECMcan support single-point injection, multi-point injection and support CAN communication. Technical parameters and precautions of ECM are as follows: ● Operating voltage: 8-32V; ● Max. operating current: 20A;...
  • Page 28 Operation &Maintenance Manual of WP13 natural gas engine Max. allowable torque for assembly is 8N•m (with 8.8 M6×12 bolts). 2.3.7 Phase sensor Fig. 2-15 Phase sensor It is used to accurately measure the engine's camshaft position (if you want to know which cylinder fires) ◆...
  • Page 29 Operation &Maintenance Manual of WP13 natural gas engine 2.3.9 Oxygen sensor (UEGO) Fig. 2-17 Oxygen Sensor The oxygen sensor is used to measure the oxygen content in the exhaust gas and convert the measured value into electrical signal and sent the signal to ECU. ECU adjusts the fuel supply amount by adjusting the injection pulse width according to the air-fuel ratio set in the pulse chart, achieving the closed-loop control against the engine.
  • Page 30 Operation &Maintenance Manual of WP13 natural gas engine ●The angle between axis of the sensor and the direction of gas flow is from 90°+15°to-30°（avoid the direction of gas flow faced to measurement hole. Fig. 2-19 Angle between axis of the sensor and the direction of gas flow 2.3.9 Electronic accelerator pedal...
  • Page 31 Operation &Maintenance Manual of WP13 natural gas engine A - AH1: ECM 5V power supply output D - AH2: ECM 5V power supply analog ground B - AF3: Pedal signal E - AG1: Pedal idle confirmation signal C - AH2: ECM 5V power supply analog ground F - empty ◆...
  • Page 32 Operation &Maintenance Manual of WP13 natural gas engine 2.3.11 Wastegate control valve (WGCV) Exhaust gas Fig. 2-24 Wastegategate gas control valve Air inlet after mixer intercooling Perssure sensor befor throttle Turbocharger Waste gas control valve Must be installed vertically Fig. 2-25 Exhaust control valve installation pipeline The Wastegate control valve is connected to the pressure regulator of the turbocharger.
  • Page 33 Operation &Maintenance Manual of WP13 natural gas engine 2.3.12 Ignition coil Fig. 2-26 Ignition coil The system herein is adopted with independent ignition coil in each cylinder. ECM controls the ignition coil’s charging time, charging duration and discharge time, and make sure that the engine always maintains the charging current 6.5A in any conditions.
  • Page 34 Operation &Maintenance Manual of WP13 natural gas engine 1. Insulator 2. Spark plug head 3. Gasket 4. Intermediate cylinder 5. Spark plug body 6. Glass sealant 7. Washer 8. Electrode 9. Gasket 10. Center electrode 11. Ground electrode 12. Side electrode The spark plug is used to receive the high voltage from high-voltage coil, and produce the sparks to ignite the combustible gas.
  • Page 35 Operation &Maintenance Manual of WP13 natural gas engine Installation and operation of natural gas engine 3.1 Unpacking of natural gas engine After the natural gas engine package box is opened, the user should first check the engine and its accessories according to the packing list, check whetherthe engine has any external damage and whether the connectors are loosened, and then perform the following tasks: The rust-proof layer and anticorrosive agent on the exposed parts should be wiped;...
  • Page 36 Operation &Maintenance Manual of WP13 natural gas engine every connecting point of the gas system, and the detector may not alarm. The materials of the components at the air inlet should be compatible with the gas medium used, ◆ service life, ambient temperature and other requirements; the interface should be made of corrosion-resistant metal materials;...
  • Page 37 Operation &Maintenance Manual of WP13 natural gas engine with the spacing of nomore than 300 mm, and clips should be provided before and after each bend. The distance between the hose and the engine exhaust pipe may not be less than 100 mm. When the distance is 100～200 mm, a reliably fixed heat insulation device should be provided.
  • Page 38 Operation &Maintenance Manual of WP13 natural gas engine 2. Intercooler system High temperature in the air intake system means that the density of air entering the engine is reduced, which may cause the engine power reduction, the riseof exhaust gas temperature and the decrease of the engine reliability.
  • Page 39 Operation &Maintenance Manual of WP13 natural gas engine LNG should be filled timely; (2) If the LNG cylinder is stored for more than 15 days, drain the LNG in the cylinder as much as possible and refill LNG before the operation of the vehicle. If the estimated vehicle out-of-service time exceeds 15 days, the LNG in the cylinder should be run out.
  • Page 40 4.1 Fuel, lubricating oil, coolant and auxiliary material for the natural gas engine 4.1.1 Fuel CNG and LNG natural gas can be used as fuels of Weichai natural gas engine. 4.1.2 Lubricating oil The natural gas engine should use the special oil. See Table 4-1 for specific standards.
  • Page 41 Operation &Maintenance Manual of WP13 natural gas engine Table 4-4 Natural gas engine coolant Coolant grade -#25 -#35 -#45 -#50 Remarks Since the coolant of LNG vehicle needs to provide the heat exchange for the vaporizer, the freezing point of antifreeze selected...
  • Page 42 Operation &Maintenance Manual of WP13 natural gas engine Auxiliary oil channel cup plug Main oil channel cup plug Weichai Cylinder block water cavity cup plug dedicated Cup plug special glue Camshaft hole cup plug Cylinder head cup plug Engine block rear end face...
  • Page 43 Operation &Maintenance Manual of WP13 natural gas engine Fig. 4-3 (3) Check for leakage: the engine should be free of water, gas or oil leakage. (4) Check the fan: visually check if the fan blades are damaged and the connecting bolts are tightened.
  • Page 44 Operation &Maintenance Manual of WP13 natural gas engine the speed is low. (4) The natural gas engine is allowed to operate continuously at rated power and rated speed under normal operation, but maximum 20 min. if operated at 105% of rated speed and 110% of rated power.
  • Page 45 When changing the oil, unscrew the plug for draining oil at the bottom of the oil pan, and then screw it on after draining the used oil; open the oil filler cap and fill the dedicated oil for Weichai natural gas engine until it reaches the specified scale;...
  • Page 46 ⑤ Start the engine and check for oil leakage. Oil filter Fig. 4-6 It is recommended to use the dedicated oil for Weichai natural gas engine, and the oil change intervals should be executed in accordance with Q/WCQTG5.27-2010 "Weichai Natural Gas Engine Oil Specifications".
  • Page 47 ③ Use a feeler gauge to check the clearance between the plane ofthe valve bridge and the rocker arm of the valve. WP13 4-valve natural gas engine requires the intake valve clearance of 0.4mm; the exhaust valve clearance of 0.6mm. If the clearance is wide or narrow, you can adjust the adjustment bolts on the...
  • Page 48 Operation &Maintenance Manual of WP13 natural gas engine The intake valve clearance is 0.4mm in cold state, and the exhaust valve clearance is 0.6mm in cold state Fig. 4-9 ④After checking 1st cylinder or 6th cylinder, turn another 360 degrees to keep 6th cylinderor 1st cylinderin the operating stroke, check and adjust the rest valves.
  • Page 49 Operation &Maintenance Manual of WP13 natural gas engine maintenance 200h six months six months Level 2 Every 20,000 km or every Every 40,000 km or every Every 60,000 km or every maintenance 400h year year Level 3 Every 40,000 km or every...
  • Page 50 2. Weichai will not bear any loss if user uses the non-dedicated accessories and oil of Weichai natural gas engine or receives maintenance at the unauthorized Weichai service center;...
  • Page 51 ② For ECM, FMV, turbocharger and other key components, please go to Weichai authorized service station for inspection and repair.
  • Page 52 Operation &Maintenance Manual of WP13 natural gas engine The ignition coil does not ignite when checking with the ignition timing light. Check 5. The ignition module is damaged. the fault code, spark plug and high voltage coil. Use a laptop to check it, and switching on 6.
  • Page 53 Operation &Maintenance Manual of WP13 natural gas engine 4. The pores on the mixer core are Clean the mixer core. blocked. 1. The manual valve on the gas tank is Check the gas tank. not fully opened. Check if the pressure regulator, gas pipe 2.
  • Page 54 Operation &Maintenance Manual of WP13 natural gas engine Contact us Weichai Power Co., Ltd. Address: No. 197, Fushou East Road, High-tech Development Zone, WeifangCity, Shandong Province Postal code: 261061 Website: http: // www. Weichai.com Free service or complaint hotline: 400-6183066...
  • Page 55 This specification stipulates the technical requirements of replacement of gas filter elements of Weichai series engines such as WP5NG, WP6NG, WP6NG, WP10NG, WP12NG, WP13NG. This specification applies to Weichai Power’s CNG and LNG series engines which are equipped with WOODWARD OH2.0 system, OH5.0 system ,OH6.0 system and BOSCH system.
  • Page 56 Operation &Maintenance Manual of WP13 natural gas engine Schedule: List of gas filters Name Part number Qty. (pcs/set) Remark Temperature control module 612600191035 Gas filter 612600190338 Filter element 612600190646...
  • Page 57 This specification stipulates the technical requirements regarding repair of exhaust controls valves of Weichai series engines such as WP5NG, WP6NG, WP7NG, WP10NG, WP12NG, WP13NG. This specification applies to Weichai Power’s CNG and LNG series engines which are equipped with WOODWARD OH2.0 system, OH5.0 system, OH6.0 system and BOSCH system.
  • Page 58 Operation &Maintenance Manual of WP13 natural gas engine V. Wastegate control valve calibration process Toolkit operation process Step 1: Turn on the key switch, do not start the engine. Step 2: Open toolkit and go to the "Diagnostic Modes - Wastegategate Control Valve Test" page.
  • Page 59 Operation &Maintenance Manual of WP13 natural gas engine Step 4: After the test is completed, change 7 to 0, and end the diagnosis process of the Wastegate control valve. VI. Maintenance specification of Wastegate control valve The WOODWARD Wastegate control valve is involved with blockage of the air inlet and the muffler strainer after a period of use.
  • Page 60 Operation &Maintenance Manual of WP13 natural gas engine D. After cleaning, the operator installs the tee on the valve body and tighten it at the tightening torque of 14N.m. 3. Steps to clean the muffler of the Wastegate control valve: A.
  • Page 61 The oxygen sensor (UEGO) and the wire harness connectors should be connected firmly without any  loosening. If necessary, OEM should design a bracket to fix them. The oxygen sensor is attached with the Weichai engine, and OEM should install it according to technical  requirements of Weichai Power.
  • Page 62 Operation &Maintenance Manual of WP13 natural gas engine should be performed according to the procedure herein when the vehicle is replaced with a new oxygen sensor or when the vehicle runs in the area with low oxygen content or after major repair is made.
  • Page 63 Operation &Maintenance Manual of WP13 natural gas engine the first time, a little longer learning time is available for the oxygen sensor d, and the data when the learned value is relatively stable should be selected as the final value.
  • Page 64 Operation &Maintenance Manual of WP13 natural gas engine...
  • Page 65 This specification stipulates the technical requirements regarding electronic throttle repair of Weichai series engines such as WP5NG, WP6NG, WP7NG, WP10NG, WP12NG, WP13NG. This specification applies to Weichai Power’s CNG and LNG series engines which are equipped with WOODWARD OH2.0 system, OH5.0 system and BOSCH system.
  • Page 66 Operation &Maintenance Manual of WP13 natural gas engine fluctuates throttle involved with external of interference sharply electromagnetic interference, which near the electronic when the affects the normal operation of the throttle; wrap the accelerator electronic throttle motor. electronic throttle pedal is with foils.
  • Page 67 QWCQTG4.22-2010 Technical Specifications of Accessories of LNG Engine III. Nozzle cleaning equipment 1. Diagram of connection of cleaning tools of fuel metering valve is shown below. (Available from Weichai Power) 2. Laptop installed with WOODWARD diagnostic software. (The software to be installed will be provided by the...
  • Page 68 Operation &Maintenance Manual of WP13 natural gas engine FMV gas outlet Dissel filter outlet FMV gas inlet 1. Electric circuit connection. The cleaning tool of the fuel metering valve requires 12V direct-current main. Connect the positive and negative terminals of oil pump to the positive and negative terminals of the battery respectively, and install a switch in the circuit to control the pump start and stop.
  • Page 69 Operation &Maintenance Manual of WP13 natural gas engine Submerged Oil pump 4. Cleaning 1) First of all, switch the engine to the cleaning mode. The engine system is connected to the diagnostic software, and enters the “Diagnostic Modes-Injector Cleaing” interface, as shown below Here the normal state is “0”...
  • Page 70 Operation &Maintenance Manual of WP13 natural gas engine 4) Then turn on the ignition key again (do not start the starter) to power on the system, and you will hear the sound from the fuel metering valve nozzle. 5) Next, quickly open the pump switch, so that the diesel can be pumped into the fuel metering valve and then flow back to the cleaning barrel.
  • Page 71 Operation &Maintenance Manual of WP13 natural gas engine Clamp (10-16) Clamp (22-32) Clean Diesel M10X35 bolt 2 sets Include nut 12V direct-current main...
  • Page 72 Weichai Natural Gas Engine” I. Scope This specification stipulates the technical requirements regarding spark plug removal and refitting of Weichai series engines such as WP5NG, WP6NG, WP7NG, WP10NG, WP12NG, WP13NG. This specification applies to all series of CNG and LNG engines equipped with WOODWARD systems.
  • Page 73 Operation &Maintenance Manual of WP13 natural gas engine Correct removal method: After starting the engine, heat the cylinder head, fill the penetrating liquid into the threaded of the spark plug (CRC penetrating oil, etc.), five to ten minute later and then remove it.
  • Page 74 Operation &Maintenance Manual of WP13 natural gas engine 3. Cleaning of spark plug Keep the spark plug dry and clean: Before installing, remove the stain or dirt on the ceramic body with a clean cloth or facial tissue. For stubborn rust or stain, you can gently polish away it with sandpaper.
  • Page 75 Operation &Maintenance Manual of WP13 natural gas engine Spark plug clearance: 0.35±0.05mm (must be adjusted with a feeler gauge); ATTENTION: Make sure that the side and center electrode faces are parallel! 7、 Refitting of spark plug After cleaning, pinch the spark plug thread, insert the spark plug wrench or high voltage coil, and then install it Here to be parallel with the spark plug wrench.
  • Page 76 Operation &Maintenance Manual of WP13 natural gas engine change the spark plug clearance! Insert the spark plug as shown here. ATTENTION: Do not touch the spark plug ceramic body to prevent the production of flying arcs! The flying arcs produced.
  • Page 77 Operation &Maintenance Manual of WP13 natural gas engine (G) Operation Specification of Vehicle LNG System I. Daily inspection and maintenance 1. Daily maintenance requirements Maintenance content Maintenance intervals Maintenance method Cylinder and bracket connecting 15 days Tightening nut Connecting nut on the cylinder...
  • Page 78 Operation &Maintenance Manual of WP13 natural gas engine with a plastic cap. Do not open the cap or vacuum plug. In the event of cylinder vacuum failure, please return the cylinder to the manufacturer for repair. A vacuum-failed cylinder must be evacuated again using special equipment, either on the vehicle or after the cylinder is removed.
  • Page 79 Operation &Maintenance Manual of WP13 natural gas engine 1. Environmental requirements When filling, there must be no fire source or flammable or combustible material within 50 m around the vehicle. The site should be open and well ventilated. The site should be provided with two or more 5kg dry powder fire extinguishers.
  • Page 80 Operation &Maintenance Manual of WP13 natural gas engine the gas dispenser, and maintain the pressure (it should be noted when venting: the venting gas should be returned to the big tank of the gas station or be discharged to a safe place);...
  • Page 81 Operation &Maintenance Manual of WP13 natural gas engine engine, impurities may cause damage on the engine. 6) When venting to the atmosphere, the vented gas should be led to a safe place. Otherwise there may the risk of fire or explosion.
  • Page 82 Operation &Maintenance Manual of WP13 natural gas engine (2) The cylinder has been calibrated with safety valve and pressure gauge; (3) The cylinder is repaired after venting. V. Common faults and troubleshooting Symptom Cause analysis Solution Vaporizer inlet/outlet pipe Looping, plug leakage...
  • Page 83 Operation &Maintenance Manual of WP13 natural gas engine The cylinder liquid has run out Fill the cylinder at the specified amount Converter is not set properly Reset the converter capacitance The level display is 0 Monitor converter Check each part...
  • Page 84 Operation &Maintenance Manual of WP13 natural gas engine with hot water, move away the frostbite part and transfer the wounded personnel to a warm place (about 20°C). Remove all clothing that hinders the blood circulation in the frostbite area. The frostbite part should immediately be submerged in a water bath with the temperature of 40-45°C, and cannot be dried or heated directly;...
  • Page 85 Operation &Maintenance Manual of WP13 natural gas engine Description: level 1 best, level 3 worst. Tip: It can be conFigd by the user according to the fire extinguisher capacity. A 30L dry powder fire extinguisher can extinguish the flame in the range of 2m...
  • Page 86 Operation &Maintenance Manual of WP13 natural gas engine (H) Explanation of Abbreviation Terms in English compressed natural gas engine coolant temperature engine control module footpedal position fuel manipulationvalve ignition control module idle verification system liquefied petroleum gas liquefied natural gas...
  • Page 87 Operation &Maintenance Manual of WP13 natural gas engine (I) List of Fault Codes List of WOODWARD OH6.0 faults: Fault description UEGO2 Htr Open or Short Grnd UEGO2 Heater Temperature LTE UEGO2 Heater Temperature HTE UEGO2 Heater Temperature Control NGT Voltage High...
  • Page 88 Operation &Maintenance Manual of WP13 natural gas engine Oil Temperature IR Low Oil Temperature Differs from Other Sensors APP1 Voltage High APP1 Voltage Low APP1 Adapt High Max APP1 Adapt Low Min APP IVS Conflict MAT Voltage High MAT Voltage Low...
  • Page 89 Operation &Maintenance Manual of WP13 natural gas engine MAP Voltage Low MAP Voltage High MAP Data Drift High MAP Data Drift Low MAP Sticking MAP Fault PTP Voltage High PTP Voltage Low PTP Data Drift High PTP Data Drift Low...
  • Page 90 Operation &Maintenance Manual of WP13 natural gas engine CRANK Sensor Other Fault CAM Sensor Other Fault Engine Soft OverSpeed Engine Hard Overspeed Vehicle Speed UnExpected Noise Adaptive Learn Correction on Hi Limit Adaptive Learn Correction on Low Limit Clutch Switch Stuck on Fault...
  • Page 91 Operation &Maintenance Manual of WP13 natural gas engine Brakes - System Controller Msg Timeout Brakes -System Controller Data Invalid ETC2RxTimeoutFault TSC1_1RxTimeoutFault TSC1_2RxTimeoutFault Woodward PTO Woodward Diagnostics Mode 2 Woodward Diagnostics Mode 1 CAN1 Line Circuit/Bus Error Passive Brakes - System Controller message Timeout...
  • Page 92 Operation &Maintenance Manual of WP13 natural gas engine Boost pressure Lower than Expected Overboost High Engine Knock Level Cylinder 1 High Engine Knock Level Cylinder 2 High Engine Knock Level Cylinder 3 High Engine Knock Level Cylinder 4 High Engine Knock Level Cylinder 5...
  • Page 93 Operation &Maintenance Manual of WP13 natural gas engine Spark 2 Dwell Adapt at Min Limit Spark 3 Dwell Adapt at Max Limit Spark 3 Dwell Adapt at Min Limit Spark 4 Dwell Adapt at Max Limit Spark 4 Dwell Adapt at Min Limit...
  • Page 94 Operation &Maintenance Manual of WP13 natural gas engine Company name: Weichai Westport Inc. Address: No. 197, Fushou East Road, High-tech Development Zone, WeifangCity, Shandong Province Postal code: 261001 Website: http: //www.weichai.com Engine sales: 0536-8232488 8233371 Accessories sales: 0536-2297290 Service hotline:...
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