Micro-computer system for control and diagnosis of motor vehicle functions

Patent · Tue May 12 04:00:00 EDT 1981

OSTI ID:6127680

Baumann, H; Schmidt, G

In order to permit diagnosis of operation and function parameters in a motor vehicle which is equipped with an electronic microprocessor control system without the necessity of providing in the diagnostic equipment substantial additional memory capability, the control system includes a sub-program for diagnosis. A first subprogram executed by the control system in response to a command from the diagnostic equipment gives the appropriate actual operational data to the diagnostic equipment. A second subprogram simulates nominal values for specific vehicle data under various operating conditions and compares these with the actual values. The resulting information is given to an operator by a display and can additionally include various instructions, EG, repair instructions or a trouble shooting sequence based on the diagnosis.

• Assignee: Bosch, Robert Gmbh (Germany, Federal Republic of)
• Patent Number(s): US 4267569
• OSTI ID: 6127680
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
COMPUTERIZED CONTROL SYSTEMS
COMPUTERS
CONTROL SYSTEMS
DIAGNOSTIC TECHNIQUES
ELECTRONIC CIRCUITS
ENGINES
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
HEAT ENGINES
IGNITION
INTERNAL COMBUSTION ENGINES
MEMORY DEVICES
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MICROPROCESSORS
OPERATION