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

Patent · Tue May 12 00:00:00 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
• Resource Relation: Patent Priority Date: Priority date 2 Jun 1978, German, Federal Republic of (F.R. Germany)
• Country of Publication: United States
• Language: English

Related Subjects

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