U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Method and arrangement for operating an internal combustion engine

Patent 6131546 Issued on October 17, 2000. Estimated Expiration Date: Icon_subject February 18, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Automotive vehicle engine control system
Patent #: 4437442
Issued on: 03/20/1984
Inventor: Yamaguchi

Apparatus for preventing engine from stalling
Patent #: 5010863
Issued on: 04/30/1991
Inventor: Ishida, et al.

Method and apparatus for controlling the idle speed of an internal combustion engine
Patent #: 5445124
Issued on: 08/29/1995
Inventor: Tomisawa, et al.

Arrangement for controlling the torque to be supplied by a drive unit of a motor vehicle
Patent #: 5484351
Issued on: 01/16/1996
Inventor: Zhang, et al.

Idling speed control method and apparatus for an internal combustion engine
Patent #: 5495835
Issued on: 03/05/1996
Inventor: Ueda

Method and arrangement for controlling an internal combustion engine of a vehicle
Patent #: 5619967
Issued on: 04/15/1997
Inventor: Streib

Method and arrangement for controlling the torque of an internal combustion engine
Patent #: 5765527
Issued on: 06/16/1998
Inventor: Lehner, et al.

Method and device for controlling and internal combustion engine Patent #: 6000376
Issued on: 12/14/1999
Inventor: Hess, et al.

Inventors

Assignee

Application

No. 252032 filed on 02/18/1999

US Classes:

123/406.23, Engine output (e.g., torque, speed, horsepower) or fuel consumption optimization123/339.14, Electrically operated control means123/436Including means responsive to instantaneous change in engine speed

Examiners

Primary: Yuen, Henry C.
Assistant: Vo, Hieu T.

Attorney, Agent or Firm

Foreign Patent References

  • 3111652 JP. 05/12/1991

International Classes

F02D 043/04
F02D 041/00

Foreign Application Priority Data

1998-02-18 DE

Abstract

A method for operating an internal combustion engine of a motor vehicle with the engine developing a torque during the operation thereof includes deriving a desired value of the torque of the engine from operating variables. The desired value of the torque is made available by at least adjusting the air supply and the ignition angle of the engine. The efficiency of the engine is deteriorated in at least one operating state of the engine compared to the efficiency in operating states outside of the one operating state by retarding the ignition angle and increasing the air supply whereby the torque developed by the engine remains essentially constant. The presence of the one operating state is detected when a startup intent of the driver of the vehicle is recognized.

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