Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1990-07-20
1991-05-14
Wolfe, Willis R.
Internal-combustion engines
Engine speed regulator
Idle speed control
123399, 123400, F02D 3300, F02D 902, F02D 102
Patent
active
050146661
ABSTRACT:
A load adjustment device with which the power of an internal combustion engine can be controlled has a driver (4) which is coupled with an accelerator pedal (1). The driver cooperates via a control element with a setting member (throttle 9) which determines the power of the internal combustion engine. The control element has a first control-element part (8a) and second control-element part (8b) which can be decoupled from each other in order to be able to control the setting member (9) independently of the driver (4) via an electric setting drive (14). Within the second control-element part (8b) there is present, in accordance with the invention, a step-up transmission (torque converter 30a) for movement on the setting drive side, the torque converter being developed as a spiral. An emergency operation spring (20) urges the second control-element part (8b) in direction of maximum idle position into an idle emergency position, and transfers the setting member (9) into an emergency operating position, upon a failure of the electric setting drive or of a device (17) electronically controlling the load adjustment device. An auxiliary spring (31) is pretensioned in the direction of minimum idle position to overcome a deactivated electric setting drive.
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Farber Martin A.
VDO Adolf Schindling AG
Wolfe Willis R.
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