Control system for an internal combustion engine and a vehicle having the same

• US 7,359,789 B2
• Filed: 11/01/2004
• Issued: 04/15/2008
• Est. Priority Date: 11/01/2004
• Status: Active Grant

• Current Assignee: Robert Bosch Corporation (Robert Bosch GmbH), Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Hackel, Vincent, Schnabel, Claus, Zevchak, David
• Primary Examiner(s): NGUYEN, CUONG H
• Application Number:
  US10/978,952
• Publication Number:
  US 20060095165A1
• Time in Patent Office: 1,261 Days
• Field of Search: 701/1, 701101-102, 123/612, 123/617, 324/207.13
• US Class Current: 701/101
• CPC Class Codes: F02D 41/1454 the characteristics being an oxygen content or concentration or the air-fuel ratio
• CPC Class Codes: F02D 41/266 the computer being backed-up or assisted by another circuit, e.g. analogue
• CPC Class Codes: F02D 41/28 Interface circuits

Abstract

The invention provides a control system for an internal combustion engine of a vehicle. The control system includes a sensor controller and an engine controller. The sensor controller includes a first interface configured to be connected to a sensor coupled to the engine, a first one or more components to provide power regulation and electromagnetic compatibility for the sensor controller, a second interface configured to be connected to a local communication bus of the vehicle, and a first processor and memory configurable to provide control and diagnostics of the sensor. The engine controller includes a third interface configured to be connected to the local communication bus, a second one or more components to provide power regulation and electromagnetic compatibility for the engine controller, and a second processor and memory configurable to control at least one aspect of the internal combustion engine based on information from the sensor controller.

Claims

1. A control system for an internal combustion engine of a vehicle, the control system comprising:

a sensor controller including

a first interface transceiver configured to be connected to a sensor coupled to the engine,

one or more components to provide power regulation and electromagnetic compatibility for the sensor controller,

a second interface transceiver configured to be connected to a local communication bus of the vehicle, and

a first processor configured to provide control and diagnostics of the sensor; and

an engine controller including

a bus interface transceiver configured to be connected to the local communication bus,

one or more components to provide power regulation and electromagnetic compatibility for the engine controller, and

a second processor configured to control at least one aspect of the internal combustion engine based on information from the bus interface transceiver.

2. A control system as set forth in claim 1 wherein the sensor controller comprises a power regulator and electromagnetic compatibility circuitry.

3. A control system as set forth in claim 2 wherein the engine controller comprises a power regulator and electromagnetic compatibility circuitry.

4. A control system as set forth in claim 1 wherein the sensor comprises an oxygen sensor.

5. A control system as set forth in claim 1 wherein the sensor comprises a wide-band oxygen sensor.

6. The control system of claim 1, comprising:

a second sensor coupled to the engine controller, and wherein the engine controller is configured to control or monitor at least one aspect of the engine based on information sensed by the second sensor.

7. A control system as set forth in claim 1 wherein the first sensor controller further comprises a power regulator, and a filter.