This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Multiplex Communication System for Gaseous Fuel Control with Bi-Fuel On-Board Diagnostics
Annotation ability available
Sector:
Language:
English
Abstract
A multiplex communication system has been developed for the Ford Alternative Fuel Qualified Vehicle Modifier (QVM) program, linking the vehicle's powertrain control module (PCM) to the alternative fuel (natural gas or propane) control module (AFCM). The system allows precalibrated diagnostic routines (OBD and non-OBD) to be selectively modified and disabled which otherwise would be affected by alternative fuel operation. The system enables the broadcasting of selected information from the PCM for use by the AFCM. An additional benefit is smoother transition between alternative fuel and gasoline operation when the gaseous fuel is depleted. Also, improved emissions on the alternative fuel have been noted due to the link. System development and function are detailed in this paper.
Authors
Topic
Citation
Lapetz, J., Kuechler, P., Zurawski, M., and Klein, R., "A Multiplex Communication System for Gaseous Fuel Control with Bi-Fuel On-Board Diagnostics," SAE Technical Paper 961983, 1996, https://doi.org/10.4271/961983.Also In
References
- Lapetz J McCarthy D Greenfield N Czapski R Geftos T Rosson J Couture S Nelson B Schaefer R Klein R Kuechler P “Development of the Ford QVM CNG Bi-Fuel 4 9L F-Series Pickup Truck” SAE Paper 960850
- Class B Data Communication Network Messages Part 2 Data Parameter Definitions SAE J2178 2 JUN 93
- Class B Data Communication Network Interface SAE J1850 AUG 91
- Universal Interface for OBD II Scan SAE J2201 JUN 93
- Albu S “California Air Resources Board Rules' 1994