Method and apparatus for controlling a motor vehicle drive train
First Claim
1. A method of controlling a device train for motor vehicles equipped with an electronic engine power control which has as associated accelerator pedal for the actuation of a throttle valve or control rod, a brake pedal and an automatic transmission on the basis of operating data, and stored driving speeds corresponding to different driving modes, wherein movements of the accelerator pedal and/or the brake pedal are monitored for motion sequences including changes in the direction of movement and certain, predetermined courses of change of the direction of the movements are selectively detected as specific direct and intentional gear selection control instructions from the driver, with the respective gear and its permissibility being calculatively determined and checked on the basis of the operating data and stored driving modes, whereupon a change of gears, if required, including actuation of the clutch, is initiated and, during the gear changing process, the engine power control system brings the engine to the number of engine revolutions resulting for the new gear independently of the position of the accelerator pedal, and wherein, in addition, automatic upshifting processes due to merely a release of the accelerator pedal are suppressed as long as the number of engine revolutions per minute remains below a permissible maximum number of revolutions per minute.
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Accused Products
Abstract
A control for the drive train of a motor vehicle is disclosed. The motor vehicle is equipped with an electronic engine power control and an automatic transmission. In addition to the position of an accelerator pedal (25) serving as the power control member, its movements as well as the movements of the brake pedal (16) are monitored by a computer (10) and predetermined motion sequences are selectively picked up as direct gear selection control instructions from the driver in order to possibly initiate gear changing processes after the premissibility of the new gear has been determined. Automatic upshifting processes are suppressed when the accelerator pedal is released as long as the number of engine revolutions remains below a predetermined engine specific maximum number of revolutions. On the other hand, movements of the accelerator pedal (25) are directly influenced by the computer (10).
106 Citations
25 Claims
- 1. A method of controlling a device train for motor vehicles equipped with an electronic engine power control which has as associated accelerator pedal for the actuation of a throttle valve or control rod, a brake pedal and an automatic transmission on the basis of operating data, and stored driving speeds corresponding to different driving modes, wherein movements of the accelerator pedal and/or the brake pedal are monitored for motion sequences including changes in the direction of movement and certain, predetermined courses of change of the direction of the movements are selectively detected as specific direct and intentional gear selection control instructions from the driver, with the respective gear and its permissibility being calculatively determined and checked on the basis of the operating data and stored driving modes, whereupon a change of gears, if required, including actuation of the clutch, is initiated and, during the gear changing process, the engine power control system brings the engine to the number of engine revolutions resulting for the new gear independently of the position of the accelerator pedal, and wherein, in addition, automatic upshifting processes due to merely a release of the accelerator pedal are suppressed as long as the number of engine revolutions per minute remains below a permissible maximum number of revolutions per minute.
Specification