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PT PACER: An Integrated Road Speed Governor
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English
Abstract
A primary fuel economy improvement derived from current electronic engine controls for heavy duty line haul trucks is their road speed limiting feature. PT PACER cost-effectively integrates this primary benefit with the well-established Cummins hydromechanical PT fuel system. The product, developed by Cummins Engine Company, Inc., and its subsidiary Cummins Electronics Company, Inc., was introduced recently to the market after a one-year development and launch period. This product is tightly integrated with the fuel system and engine, resulting in stable and smooth control, tamper resistance and reliability. Onboard diagnostics, which were designed to detect system failures, enhance troubleshooting capability and tamper resistance. Extensive component design validation testing and environmental testing along with laboratory and vehicle system testing were conducted prior to field test. Field test experience has provided confidence that this new system is an effective, reliable product delivering the intended benefits to the customer.
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Citation
Bryden, W. and Wilson, M., "PT PACER: An Integrated Road Speed Governor," SAE Technical Paper 900592, 1990, https://doi.org/10.4271/900592.Also In
References
- “PACE Application Guidelines: Vehicle Performance and Gearing Recommendations,” Cummins Engine Company, Inc. Bulletin 3624151 November 1987
- Lannan, Ronald B. Sisson Albert E. Wolber William G. “Cummins Electronic Control for Heavy Duty Diesels,” IEEE Proceedings Catalog No. 88CH2533-8 International Congress on Transportation Electronics (CONVERGENCE 88) Dearborn, Michigan October 17-18 1988
- Austin, J.W. Weimer R.J. “Service and Support of Electronics Products in the Trucking Industry,” SAE Paper No. 871579 Future Transportation Technology Conference Seattle, Washington August 10-13 1987
- SAE J1708 “Recommended Practice for Serial Data Communications Between Microcomputer Systems in Heavy Duty Vehicle Applications,” January 1986
- SAE J1587 “Recommended Practice for Electronic Data Interchange Between Microcomputer Systems in Heavy Duty Vehicle Applications,” August 1988