Method and arrangement for controlling an internal combustion engine of a vehicle

• US 5,954,040 A
• Filed: 08/26/1997
• Issued: 09/21/1999
• Est. Priority Date: 08/27/1996
• Status: Expired due to Fees

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Riedel, Karlheinz
• Primary Examiner(s): Kwon, John
• Application Number:
  US08/917,420
• Time in Patent Office: 756 Days
• Field of Search: 123/703, 123/339.12, 123/406.44, 123/704, 123/494, 123/406.12
• US Class Current: 123/703
• CPC Class Codes: F02D 41/144 Sensor in intake manifold

Abstract

The invention is directed to a method for controlling an internal combustion engine of a vehicle utilizing a control unit which detects operating data of the engine. The control unit includes a computing unit for processing the operating data and the control unit drives actuating elements for influencing the operating state of the engine in dependence upon the detected operating data. In the method, the concentration of at least one component of the ambient air is detected with a sensor and the concentration is processed in the control unit. The actuating elements are driven in dependence upon the at least one component of the ambient air. An arrangement for carrying out the method is also disclosed.

Claims

1. A method for controlling an internal combustion engine of a vehicle utilizing a control unit which detects operating data of the engine, the control unit including a computing unit for processing said operating data and the control unit driving actuator means for adjusting the operating state of the engine in dependence upon the detected operating data, the method comprising the steps of:

detecting the concentration of at least one component of the ambient air with sensor means;

processing said concentration in said control unit; and

,

driving said actuator means in dependence upon said at least one component of said ambient air.

2. The method of claim 1, wherein said sensor means includes at least one of the following:

an ozone sensor, a carbon dioxide sensor, a nitrogen oxide sensor, a sulfur dioxide sensor, a carbon monoxide sensor and a hydrocarbon sensor.

3. The method of claim 1, wherein the detected operating data includes at least one of the following:

engine rpm, inducted air quantity, engine temperature, composition of the exhaust gas, temperature of the inducted air and the actual load of said engine.

4. The method of claim 3, wherein said actual load of said engine is detected utilizing at least one of the following:

a hot-wire air mass sensor, an air quantity sensor and a load sensor which detects pressure (p).

5. The method of claim 1, wherein said actuator means adjusts at least one of the following:

ignition time point, injection time, dwell time, pulse duty factor of said idle actuator, exhaust gas return, the lambda control, the rpm of said engine and the road speed of said vehicle.

6. An arrangement for controlling an internal combustion engine, the arrangement comprising:

a plurality of sensors for detecting operating data of said engine;

a control unit for processing and evaluating said operating data;

actuator means connected to said control unit and being provided to adjust the operating state of said engine;

ancillary sensor means for detecting at least one component of the ambient air;

said ancillary sensor means being coupled to said control unit; and

,

said control unit being adapted to drive said actuator means in dependence upon said data of said ancillary sensor means and said operating data.

7. The arrangement of claim 6, said ancillary sensor means including at least one of the following coupled to said control unit:

an ozone sensor, a carbon dioxide sensor, a nitrogen oxide sensor, a sulfur dioxide sensor, a carbon dioxide sensor and a hydrocarbon sensor.

8. The arrangement of claim 6, said control unit including:

a source transducer, an output stage, an input/output unit, a control computer unit, a read only memory (ROM) and a read/write memory (RAM).

9. A method for controlling an internal combustion engine of a vehicle equipped with a control unit and actuator means for adjusting the operation of said engine, the control unit including a computing unit for processing operating data of said engine and the control unit driving said actuator means for adjusting the operating state of the engine, the method comprising the steps of:

detecting the operating data of said engine and supplying said operating data to said control unit;

detecting the concentration of at least one component of the ambient air with sensor means and supplying said concentration to said control unit;

conjointly processing said concentration and said operating data in said computer unit; and

,

driving said actuator means in dependence upon said operating data and said concentration thereby operating said engine in a manner more compatible with the environment.

10. The method of claim 9, wherein said sensor means includes at least one of the following:

an ozone sensor, a carbon dioxide sensor, a nitrogen oxide sensor, a sulfur dioxide sensor, a carbon monoxide sensor and a hydrocarbon sensor.

11. The method of claim 9, wherein the detected operating data includes at least one of the following:

engine rpm, inducted air quantity, engine temperature, composition of the exhaust gas, temperature of the inducted air and the actual load of said engine.

12. The method of claim 11, wherein said actual load of said engine is detected utilizing at least one of the following:

a hot-wire air mass sensor, an air quantity sensor and a load sensor which detects pressure (p).

13. The method of claim 9, wherein said actuator means influences at least one of the following:

ignition time point, injection time, dwell time, pulse duty factor of said idle actuator, exhaust gas return, the lambda control, the rpm of said engine and the road speed of said vehicle.