Control system for motor vehicle with continuously variable transmission and engine
A control system is described for a motor vehicle having an accelerator, an engine, a device to adjust combustible charge admitted to the engine, and a continuously variable transmission operatively associated with the engine such that the engine speed varies by effecting shifting in reduction ratio in the continuously variable transmission. The control system comprises an accelerator sensor coupled with the accelerator for detecting depression degree of the accelerator and generating an accelerator sensor signal indicative of the detected depression degree of the accelerator; an engine speed sensor operatively associated with the engine for detecting engine speed of the engine and generating an engine speed sensor signal indicative of the detected engine speed; means coupled with the accelerator sensor for generating a target engine speed indicative signal indicative of a target engine speed which is a predetermined function of depression degree of the accelerator; means coupled with the engine speed sensor and the target engine speed indicative signal generating means for generating a deviation indicative signal indicative of a deviation between the detected and target engine speeds and controlling shifting in reduction ratio in the continuously variable transmission in such a manner as to decrease the deviation toward zero; means responsive to the deviation indicative signal for selectively generating, as an output signal, a first target value which is a predetermined function of depression degree of the accelerator or a second target value which is a predetermined function of engine speed of the engine and means responsive to the output signal for actuating the device in such a manner that the engine produces horse power indicated by the output signal.
- Assignee:
- NOV; NOV-87-044017; EDB-87-045853
- Patent Number(s):
- US 4637280
- OSTI ID:
- 6885153
- Resource Relation:
- Patent File Date: Filed date 31 Jul 1985
- Country of Publication:
- United States
- Language:
- English
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