Cross-checking processors for powertrain control systems using a dedicated serial data link

• US 20030216848A1
• Filed: 05/16/2002
• Published: 11/20/2003
• Est. Priority Date: 05/16/2002
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust)
• Inventors: OʼLeary, Patrick J., Worthing, James L., Rogers, Bruce A., Katrak, Kerfegar Khurshed, Schaller, Robert J., Purcell, James T., Bauerle, Paul Alan, Hartrey, Timothy John, Costin, Mark Henry
• Granted Patent: US 7,269,491 B2
• Time in Patent Office: Days
• US Class Current: 701/54
• CPC Class Codes: F02D 41/266 the computer being backed-up or assisted by another circuit, e.g. analogue

Abstract

An engine management system for a vehicle includes engine and transmission control modules that are connected to a serial vehicle data bus. A dedicated serial data bus is connected to the transmission control module and the engine control module. The engine and the transmission control modules perform processor validity and integrity checks over the dedicated data bus. In an alternate powertrain management system, engine and transmission control modules are connected to a serial vehicle data bus.

Claims

1. An engine management system for a vehicle, comprising:

a vehicle data bus;

an engine control module connected to said vehicle data bus;

a transmission control module connected to said vehicle data bus; and

a dedicated data bus connecting said transmission control module to said engine control module, wherein said engine control module and said transmission control module perform processor validity and integrity checks over said dedicated data bus.

2. The engine management system of claim 1 wherein said vehicle data bus is a serial data bus.

3. The engine management system of claim 1 wherein said dedicated data bus is a serial data bus.

4. The engine management system of claim 1 further comprising an electronic throttle control sensor connected to said engine control module.

5. An engine management system for a vehicle, comprising:

a serial vehicle data bus;

an engine control module connected to said serial vehicle data bus;

a transmission control module connected to said serial vehicle data bus; and

a dedicated data bus connecting said transmission control module to said engine control module, wherein said engine control module and said transmission control module perform processor validity and integrity checks over said dedicated data bus.

6. The engine management system of claim 5 wherein said dedicated data bus is a serial data bus.

7. The engine management system of claim 5 further comprising an electronic throttle control sensor connected to said serial engine control module.

8. An engine management system for a vehicle, comprising:

a vehicle data bus;

an engine control module connected to said vehicle data bus;

a transmission control module connected to said vehicle data bus;

an electronic throttle control sensor connected to said engine control module; and

a dedicated data bus connecting said transmission control module to said engine control module, wherein said engine control module and said transmission control module perform processor validity and integrity checks over said dedicated data bus.

9. The engine management system of claim 8 wherein said dedicated data bus is a serial data bus.

10. The engine management system of claim 8 wherein said vehicle data bus is a serial data bus.

11. An engine management system for a vehicle, comprising:

a serial vehicle data bus;

an engine control module connected to said serial vehicle data bus;

a transmission control module connected to said serial vehicle data bus;

an electronic throttle control sensor connected to said engine control module;

an electronic throttle control sensor connected to said serial vehicle data bus; and

a dedicated serial data bus connecting said transmission control module to said engine control module, wherein said engine control module and said transmission control module perform processor validity and integrity checks over said dedicated data bus.