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The J1850 bus requirements promote an unique and well characterized physical layer behavior developed through the learning curve of previous multiplex solutions. Design requirements such as: 1) Reliably interconnecting all of the vehicle's most complex modules, 2) Consistently withstanding the vehicle's harsh environment, and 3) Meeting SAE's functionality requirements, were all a formidable task to achieve. This paper will highlight the path taken to achieve a J1850 Bus interface which successfully met all of the design and functional goals. Chrysler's C2D insights will be discussed and related to goals for J1850. Other design considerations will also be discussed such as EMC issues, custom test equipment, and vehicle and component testability. In turn, silicon processes with special structures and topologies will be discussed relating the specific design with the needed electrical behavior. The HIP7020 J1850 BUS TRANSCEIVER I/O for MULTIPLEX WIRING accomplishes these requirements.

MIL 3's OPNET simulator was used to model Chrysler's J1850 bus. Modeled were both J1850 bus characteristics and those portions of control modules (e.g., the engine controller) which communicate on the bus. Current Chrysler control module algorithms and proposed Chrysler J1850 message formats were used to design the control module models. The control module models include all messages which are transmitted at fixed intervals over the J1850 bus. The effects of function-based messages (e.g., messages to be transmitted on a particular sensor or push-button reading) on system load were investigated by transmitting an additional message with a fixed, relatively high priority at 50 millisecond intervals.

Chrysler is a company run by automotive enthusiasts, and its motorsports programs are an integral part of the company's corporate, brand, and product development process. Chrysler's motorsports programs are executed from within its Platform Team system by the same engineers, using the same processes and facilities as production vehicle programs. This results in teaching and inspiring engineers, designers, and technicians, as well as providing genuine technical benefits to the company. This paper tells the “how” story of the design, build, and test of the Dodge Stratus Super Touring Car. Detailed results have been purposely omitted from the paper due to the competitive nature of motor racing.

A few years ago, electric vehicles (EVs) were considered to be objects of the distant future … technology that was still in its infancy, not yet ready and for those outside the “high pollution” areas probably not even worth the expenditure. But the present day scenario has changed dramatically. In the United States of America, several states are following California's lead and the need for the operating fleets to commit to purchase of Zero Emission vehicles (ZEVs) is becoming a requirement. In order to make the technology available to the utilities … as well as the public, state of the art, affordable batteries are essential for making EVs a reality and an effective means of transportation.

The application of automation to dynamometer testing of engines has led to the development of specialized circuits and techniques to compensate for limitations inherent within the electromechanical systems used to implement automation theory. Stable, quick response to a programmed speed change has been achieved for engine-automatic transmission testing by the use of a parallel feedback technique. Vehicle simulation using analog computer circuitry and road test data is used to calculate torque requirements from programmed acceleration-time and velocity-time curves. Similar circuitry is used to calculate engine-transmission output torque from dynamometer parameters.

Building maintenance and sanitation provides economic opportunities for good management through an Industrial Engineering approach. The Engineering Div. of Chrysler Corp. gained million dollar savings with these methods. This Industrial Engineering approach is indicated by its sanitation program which includes work sampling, methods development, performance goals, measurement of what is to be cleaned, work load determination, detailed schedules, detailed material control, quality measurement, supervisory training, employee training, and detailed supervisory follow-up. Although valuable individually, these methods together provide a gold mine for progress and cost saving.