Related Manuals for ECM AFM1040
Summary of Contents for ECM AFM1040
- Page 1 ™ ™ AFM1040 / AFM1540 Air-Fuel Ratio Combustion Monitor Instruction Manual 02/06 Part Number 1040A-6...
- Page 2 No part of this manual may be photocopied or reproduced in any form without prior written consent from ECM: ENGINE CONTROL AND MONITORING. Information and specifications subject to change without notice. AFM1040 and AFM1540 are trademarks of ECM: Engine Control and Monitoring. Printed in the United States of America.
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Page 3: Table Of Contents
Table of Contents Introduction The Air-Fuel Ratio Combustion Monitor (AFM) AFM1040/AFM1540 Components List Important Operation Notes How to Use Hooking-up the AFM Power Warm-up Analog Output Changing Sensor Type (AFM1540 Only) SMB Interface (Serial Measurement Bus, AFM1540 Only) Calibration Fuel Type Compensation... - Page 4 Supplementary Information...
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Page 5: Introduction
Introduction The Air-Fuel Ratio Combustion Monitor (AFM1040/AFM1540) The ECM Air-Fuel Ratio Combustion Monitor (AFM) was designed for the professional calibration of fuel-injection or carburetor systems. Using a state-of-the-art, broadband lambda (λ) sensor, the AFM provides unmatched measurement range, accuracy, and speed- of-response in a compact, lightweight package. - Page 6 Wiring Harness, 1m 1002A-3c SMB/PC Cable, 2m (AFM1500) 1500A-16 SMB/PWR Cable, 300mm (AFM1500) 1500A-17 Calibration Screwdriver 2400E-35 Sensor Mounting Boss and Plug (M18X1.5mm) 1000A-5 Instruction Manual 1040A-6 AFM1540.EXE Software Program Disk 1540A-7 ECM offers custom harness solutions. Contact ECM for more information.
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Page 7: Important Operation Notes
Important Operation Notes 1. Before installing the lambda sensor, apply a small amount of non-lead containing antiseize compound to its threads. Do not get the compound on the sensor’s tip. 2. Do not operate an engine for more than three minutes with the lambda sensor in the exhaust and the control module’s power off. -
Page 8: How To Use
How to Use Hooking-up the AFM Location of the Lambda Sensor The lambda sensor should be located from 12" to 48” from the exhaust valve(s) of the engine. A location further from the engine may be used as long as it is at least ten times the exhaust pipe diameter upstream of the end of the exhaust system. -
Page 9: Power
The AFM has a 0V to 5V linearized output suitable for input into a data acquisition or engine control system. The analog output is available from the female BNC connector on the wiring harness. For the AFM1040 only, the shell of the connector is signal ground and it is electrically connected to the power source ground. -
Page 10: Changing Sensor Type (Afm1540 Only)
Changing Sensor Type (AFM1540 Only) AFMs are delivered programmed to use one of the following sensors: Bosch LSU 4.9, LSU 4.2, or NTK UEGO. This is indicated on the AFM's label. The AFM1540 can be user- reprogrammed to use any one of these sensors. PC software routine AFM1540.EXE is supplied with the AFM1540 to facilitate this. - Page 11 The AFM1540 module addressed responds (within 1 ms max.) with the byte of data requested. The command from the PC to the AFM1540 modules and the conversion formulas for the data from the AFM1540 modules to the PC are given in the following table. The state diagram for SMB communication is at the back of this instruction manual.
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Page 12: Calibration
Command Mode Command Mode is used to auto-detect AFM1540 and F/A1540 modules on the SMB bus. After the reception of command XXXX 0000 (where XXXX = module address) the module switches into Command Mode and waits for a second byte. Upon entering Command Mode, wait 30 ms minimum before issuing commands. -
Page 13: Fuel Type Compensation
Fuel Type Compensation The standard AFM output is for gasoline (measurement range of 8.0 to 18.0 AFR) with a fuel H:C ratio of 1.85 and an O:C ratio of zero. If a fuel of a different composition is used, the AFR measurement range will be different. - Page 14 Pressure Compensation Equation for AFR [Equation 3a] AFR(corrected) = (AFR(measured) + B x P) / (1 + C x P) where: AFR(corrected) = the AFR corrected for exhaust pressure. AFR(measured) = the AFR output by the AFM. B = 0.00398 (LSU 4.2), 0.00395 (LSU 4.9), 0.009140 (NTK) rich B = 0.00471 (LSU 4.2), 0.00453 (LSU 4.9), 0.012100 (NTK) lean C = 0.000273 (LSU 4.2), 0.000271 (LSU 4.9), 0.000627 (NTK) rich C = 0.000323 (LSU 4.2), 0.000311 (LSU 4.9), 0.000830 (NTK) lean...
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Page 15: Specifications And Limits
Specifications and Limits Measurement Range and Accuracy Range: 8 to 18 AFR (gasoline) (Analog Output and SMB) 0.055 to 0.125 FAR, 0.549 to 1.235 λ, 0.0 to 4.0 %O (SMB Only) Accuracy: 1.5% Exhaust Operating Limits Maximum Exhaust Gas Temperature: 950 deg. C, 1742 deg. F. Exhaust Gas Pressure Range: 0.8 - 1.7 atm (gauge). -
Page 16: General Information
SMB Interface (Serial Measurement Bus, AFM1540 Only): • AFR, FAR, λ, %O2, and Module Status Output • Each Module can be assigned an address from 0h to Fh using a switch on the side of the module • Auto-detect feature for Device Identification •... -
Page 17: Troubleshooting
2. For the AFM1040 only, the ground wire on the wiring harness is not attached directly to the ground at the vehicle's battery. If you connect a single wire from... -
Page 18: Safety Warnings
Safety Warnings In the installation and use of this product, comply with the National Electrical Code and any other applicable Federal, State, or local safety codes. Always wear eye protection when working near engines, vehicles, or machinery. During installation, turn off the power and the engine and take all other necessary precautions to prevent injury, property loss, and equipment damage. -
Page 19: Warranty And Disclaimers
Warranty and Disclaimers WARRANTY The products described in this manual, with the exception of the lambda sensor, are warranted to be free from defects in material and workmanship for a period of one year from the date of shipment to the buyer. Within the one year warranty period, we shall at our option replace such items or reimburse the customer the original price of such items which are returned to us with shipping charges prepaid and which are determined by us to be defective. - Page 25 State Diagram for SMB Communication...
- Page 27 AFM1540.EXE 1.2 Eeprom Programming Software (AFM1540 Only) AFMs are delivered programmed to use one of the following sensors: Bosch LSU 4.9, LSU 4.2, or NTK UEGO. This is indicated on the AFM’s label. The AFM1540 can be user- reprogrammed to use any one of these sensors. PC software routine AFM1540.EXE is supplied with the AFM1540 to facilitate this.
- Page 28 Typical Output on PC Monitor: TL6312.TXT FILE AFM15 FIRMWARE REV = 1.02 DATA DATA E_REV E_XXX E_LAM E_LAB E_VH E_VHIN E_RMP E_VHPK E_VBAT E_VBL E_VBH E_SUBT E_AFM E_AFB E_FAM E_FAB CHECKSUM PROGRAMMING SUCCESSFUL, PRESS <Enter> TO RESTART, <Q> TO QUIT...
- Page 30 Los Altos, CA 94023-0040 ● USA ● (408) 734-3433 ● Fax: (408) 734-3432 www.ecm-co.com...