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Related Manuals for D-MOTOR LF26
Summary of Contents for D-MOTOR LF26
- Page 1 The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium D-MOTOR International © AIRCRAFT ENGINE ENGINE OWNERS MANUAL TYPE LF26 - 4 Cylinder Engine Publication : 2019.3/LF26 © D-Motor International bvba, February 2019 EFFECTIVITY page 1 19-3-2019...
- Page 2 This manual is a revision of the previous manual published in 2013 and any revisons there of. Information within this document replace the instructions of previous D-Motor International Publications – Engine Owners Manual. Effective Changes for this manual / document...
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Page 3: Table Of Contents
Contact Information ..........................8 TOA (Table of Amandments) ....................... 9 SAFETY INFORMATION .......................... 10 MAIN SECTION ............................11 Technical Sheet LF26 type D-Motor Engine ..................11 Operating limits ..........................13 Description ............................15 ENGINE OPERATION .......................... 19 Engine start............................ 19 Motor STOP ........................... - Page 4 The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium First 25 & 50-hour-inspection ....................... 35 100-hour-inspection or annually ....................35 200-hour-inspection ........................35 Preservation of the engine for long term storage ................36 Winter operation ..........................37 Care of the electrical system ......................37 Cold starting procedures .......................
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The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Blank Page (intentional) EFFECTIVITY page 5 19-3-2019... -
Page 6: Introduction
INTRODUCTION D-MOTOR Engines D-Motor LF 26 4 cylinder and LF39 6 cylinder engines are direct drive 100% water cooled boxer side valve engines. The engines incorporate multi-point fuel injection controlled by an advanced twin ECU control system which is performance mapped with Lambda sensing. -
Page 7: Warning
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Warning This is a non-certified aircraft engine ; the possibility of engine stoppage exists at all times. Do not operate this engine over densely populated areas. Do not operate this engine over terrain where a safe, power off landing cannot be performed. -
Page 8: Updates/Changes Distribution
Direct recommended changes or questions to the attention of “Publications” at the address listed in this section, “Contact Information” or send comments via e-mail to info@d-motor.eu. Notify our Customer Service Department immediately, using our telephone number, if you discover... -
Page 9: Toa (Table Of Amandments)
Manual are not clearly understood or if you have any questions, please contact a D- Motor International® authorized aircraft engines Dealer/Distributors or their Independent Service Center. D-Motor International wants to ensure your satisfaction, flying your aircraft powered by this D-Motor®-aircraft engine. -
Page 10: Safety Information
• The D-Motor engine is not suitable for acrobatics. • The selection and use of the D-Motor on any aircraft is at the sole discretion and responsibility of the aircraft manufacturer, assembler and owner or user. • Duet o different designs, equipment and types of aircraft, D-Motor will allow no warranty or representation on the suitability of its engine’s use on any particular aircraft. -
Page 11: Main Section
B-8540 Deerlijk, Belgium • When in storage protect the engine and fuel system from contamination and exposure. • NEVER operate the LF26/39 engine without OIL or Water, NEVER with insufficient OIL or WATER ! • Periodically verify level of coolant. - Page 12 The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Torque 220 nm (162 ft/lbs) at 2.600 RPM Rage of use 800 to 3000 RPM 2100 RPM to 2800 RPM in Cruise Lubrication Dry sump Oil pump Pump driven by camshaft Oil pressure 1.5 - 5.0 bar (21 to 75psi) Oil specification...
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Page 13: Operating Limits
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Operating limits Performance only to be insured if with consideration of the following : * Standard engine * without auxilary equipment * ISA condition * installation following installation guidelines Take – Off performance 70 KWatt / 95 HP at 3.000 RPM Maximum continious performance 67.5 KWatt / 92 HP at 2.800 RPM... - Page 14 The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Coolant temperature Maximum 100°C – 212°F Ambient temperature Maximum in flight 60°C (140°F) (MAP temperature) Maximum at start 45°C (113°F) ambient temperature Minimum at start -20°C (-13°F) (oil temperature) Fuel pressure Maximum 3.0 bar (43psi) Minimum...
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Page 15: Description
B-8540 Deerlijk, Belgium Description D-Motor LF 26 4 cylinder and LF39 6 cylinder engines are direct drive 100% water cooled boxer side valve engines. The engines incorporate multi-point fuel injection controlled by an advanced twin ECU control system which is performance mapped with Lambda sensing. - Page 16 The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium During the operation of the engine the following data and information are constantly collected, analysed and interpreted by the ECU • Throttle position • Intake air temperature • Crankshaft position analogue •...
- Page 17 8V is reached. Installation in the electric system of a sufficiently sized capacitor will ensure continued operation of the engine in the case of a battery failure. Short specification list • Type: D- motor LF26 • Class: Microlight aircraft •...
- Page 18 Installed dry weight (liquids 5kg): 58 kg (127lbs) (battery and liquids not included) WARNING !! DUE TO THE PRECISION OF THE ECU CRANKSHAFT ROTATION MEASUREMENT IT IS POSSIBLE TO HAND START THE LF26 BY ROTATING THE PROPELLER. EFFECTIVITY page 18 19-3-2019...
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Page 19: Engine Operation
Houtekietstraat 11 B-8540 Deerlijk, Belgium ALWAYS ENSURE ALL SWITCHES ARE OFF BEFORE WORKING ON THE LF26 ENGINE. ENGINE OPERATION Engine start The LF 26 does not have a choke or hot air intake. Thanks to the twin ECU and multipoint fuel injection system the motor may be started at any temperature without any special precaution. - Page 20 The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium • Fuel pump Fuse/Switch ON/OFF switch for the fuel pump with fuse function • Ignition circuit (2x) ON/OFF switches of the ignition circuits (mag switches) • Throttle Regulate the power setting CAUTION! Never start the engine without prop installed.
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Page 21: Motor Stop
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Motor STOP The engine should not be stopped when it is very hot, as the coolant and the fuel are not being circulated anymore and it may create vapour lock problems due the residual heat. Generally if the landing is made at reduced power and taxiing is sufficient to cool down the engine temperature to enable immediate stopage of the engine. -
Page 22: Emergency Procedures
As with all engines, the way you treat your engine will increase or decrease tremendously its life expectancy, the consumption, the maintenance costs and deterioration of your engine. The following recommendations will help to ensure you get the best out of your D Motor LF26 engine :- •... - Page 23 The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium the flight should be aborted immediately. In case of a failure in flight the right reaction is very important: • Failures indicated by the ECU Basically there are two kinds of failure notification, an indication by a clear text message (if a monitor is installed with this capability) or by the blinking or constant glowing, of the LED on the ECU.
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Page 24: Ecu Error Messages
• Heavy vibrations The LF26 has a Multipoint fuel injection system so carburettor icing cannot occur, and will not be the cause of vibrations. This means any heavy vibrations must come from other sources, like the propeller, loss of counterweights on the propeller, loose bolt holding the propeller, loose spinner, etc. -
Page 25: Safety / Avoiding Failures
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium The error number 8 may be shown also directly after the start of a cold engine. In this case the operational temperature of the probe has yet not reached to make a precise measurement. After warming up the error message should disappear. -
Page 26: Oil Supply
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium NOTE A damaged sealing surface of the filler cap or a damaged head seal for example, cannot be recognized by checking the level of the cooling liquid in the overflow reservoir. It is possible that when the motor gets warm, the cooling liquid is pushed into the reservoir, but as the engine cools the liquid is not sucked back in the cooling system of the engine anymore. -
Page 27: Throttle Adjustments
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Mode of operation: The oil pump pulls oil through the heat exchanger and the oil filter, oil out of the reservoir and press the oil through the different channels toward the lubrication spots. A spring loaded ball valve regulates the oil pressure. -
Page 28: Fuel Supply
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium CAUTION! The rotating propeller is extremely dangerous! Adjustments must be done with the utmost caution from behind the engine. The aircraft must be tied down or properly chocked. Do not perform this operations without a safety observer. -
Page 29: Important Information About Fuels And Lubricants
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Troubles in the fuel supply may lead to poor performance, uneven running, high fuel consumption, and even to a total engine failure. As prevention the fuel supply system must be inspected regularly for leakage, damage or abnormal sign of use. -
Page 30: Power Supply
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium 80 – 100 Deg.C (170-212 F.) CAUTION! Don’t use any additives Cooling system Liquid cooled (Max. water temperature 100 Deg. C (212 f)) Max. continuous power keep water temperature between min. 75 & max. 95 Deg. C. (167 – 203 50% coolant by volume. -
Page 31: Spark Plugs
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium regime. The charge condition is monitored by the digital voltage regulator and limited to 14V. All electrical units are supplied power by the battery and all circuits are separately protected. The power generation is monitored using the a voltmeter and ammeter. The average current consumption on board, when the engine is running, including the radio, transponder, glass cockpit and position lights amounts is approximately 10A if the battery is fully charged. - Page 32 The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Crankcase screw front Rods Cylinder head Mounting plate Oil pump Flange Screw for starter Intake manifold screw Water pump housing Gear on camshaft Extension crankshaft Screw-nut alternator Bolts cylinders to crankcase Spark plugs M14x1.25 If torque wrench is not available.
- Page 33 The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium EFFECTIVITY page 33 19-3-2019...
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Page 34: Performance Curve Of The Lf26 Engine
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Performance Curve of the LF26 Engine EFFECTIVITY page 34 19-3-2019... -
Page 35: Periodic Inspections
Check tightness of bolts, nuts and locking pins/split pins. • Check for oil leaks from hoses, the oil tank and fittings. • Perform an oil change and send sample to constructor (D-Motor) • Change the oil filter. • Check all fuel lines for fit, fretting, general condition, safeties, leaks and wear. -
Page 36: Preservation Of The Engine For Long Term Storage
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Preservation of the engine for long term storage If the engine is not used for long periods and/or in extreme climatic conditions, we recommend the following instructions to protect against corrosion. Extra protection against corrosion beyond these recommendations is not necessary. -
Page 37: Winter Operation
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Winter operation Care of the electrical system With the onset of winter the following procedures must be followed. • Check all the connections of the ignition system and clean if necessary. •... -
Page 38: Warm Engine Shows Irregular Idling
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Battery defective or discharged Install charged battery or recharge. Starting speed too low, start problems Check battery. Spark plugs wet from condensation Dry plugs inside and outside. Spark plugs wet with fuel (over-choked) Dry spark plugs. -
Page 39: The Engine Does Not Develop Full Power
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Poor oil quality Change oil. Use prescribed oil. Oil filter blocked Change the oil filter. Defective oil temperature gauge Replace the oil temperature gauge. Excessive piston ring gas leakage (blow by) Major overhaul is necessary. -
Page 40: The Engine Does Not Stop Immediately
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium The engine does not stop immediately Cause Action Idle speed to high Adjust proper idle speed (800 r/min) Ignition switch defective Replace the switch. Excessive oil consumption Cause Action Piston rings or oil scraper rings worn A major overhaul is necessary Poor oil quality Change oil. -
Page 41: Overhauls
The recommended time between overhaul (TBO) is at present 1500 hours of operation. An increase of TBO due to field experience will be published in the Service Bulletins of the manufacturer D-Motor. Major repairs and major modifications are also only to be performed by the manufacturer or by approved service centres, which are authorized by the manufacturer. -
Page 42: Engine Registration Card - Warranty Activation
B-8540 Deerlijk, Belgium ENGINE REGISTRATION CARD – WARRANTY ACTIVATION Every D-Motor engine product has to be registered with D-Motor at the date of purchase. Products which are not registered with D-Motor are excluded from the manufacturer’s warranty. Any Warranty by D-Motor becomes null and void if spare parts and/or accessories other than GENUINE D-Motor spare parts and/or accessories are used. -
Page 43: Checklist Parts
The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium Type LF26 (4 Cylinder) Checklist parts 2019-V2.1 (GKG) Additional Parts / pièces supplémentaires (1) Oil Sump (with / without indicator) (2) Oil Radiator Carter d'huile (avec / sans indicateur) Radiateur d'huile P/N 107010 –... - Page 44 Pièce de connexion (en forme de T) P/N 107101 - #1 pour capteur de température du calculateur P/N 107102 - #1 (9) Cables Bougies /Spark Plug cables (10) Bougies/Spark Plug LF26 P/N 106025 - #1 P/N 106021 - #8 EFFECTIVITY page 44 19-3-2019...
- Page 45 The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium (11) Raccord d'huile /Oil Fitting (12) Lambda Sensor 45° + 90° + 180° P/N 185001 - #1 P/N 107085 107086 107087 #1 (13) Fuel Filter unit (14) Fuel Pressure regulator Unité de filtre à carburant Régulateur de pression de carburant P/N 107201 - #1 P/N 107202 - #1...
- Page 46 D-Motor team Veuillez vérifier si toutes les pièces ajoutées sont expédiées avec votre moteur D-Motor! Consultez notre système (http://drop.d-motor.eu) si la liste des add-on les plus à jour est jointe. Contactez notre service après-vente (info@d-motor.eu) en cas de pièces manquantes.
- Page 47 The Light Weight Engine Houtekietstraat 11 B-8540 Deerlijk, Belgium LF 26 Illustrated Delivery Parts : FIG. Description Part Number QTY. (P/N) OIL Sump Tank Without indicator (UK market) 107010 OIL Sump Tank With indicator 107011 Oil Radiator 107015 Copper sealing rings Exhaust 211012 Exhaust KIT 211001...
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