Control system for controlling driving torque delivered for driven wheels
First Claim
1. A control system for controlling distribution of a driving torque derived from a vehicular engine to driven wheels, comprising:
- first means for manually entering a torque demand for the driving torque to be distributed into the driven wheels for controlling vehicular traveling behavior, said first means generating an engine torque demand indicative signal;
second means for monitoring an engine revolution speed for producing an engine speed indicative signal;
third means for deriving a target engine output torque on the basis of said engine torque demand indicative signal and said engine speed indicative signal;
fourth means for detecting a vehicle running condition based on a preselected vehicle driving parameter which affects a conversion of the engine output torque into a thrust force which forces the vehicle to travel, for deriving a correction factor for said target engine output torque on the basis of the detected vehicular running condition, and modifying said target engine output torque on the basis of said correction factor; and
fifth means for controlling engine driving condition for adjusting the engine speed to change an engine output torque which coincides with the modified target engine output torque.
1 Assignment
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Accused Products
Abstract
A control system for an automotive vehicle controls driving torque delivery for driven wheels. The control system basically controls an output torque of an automotive internal combustion engine toward a target engine output torque which is derived on the basis of an accelerator operational magnitude. The target engine output torque can be modified according to associated conditions, such as road friction level, a characteristic of a power train including a torque converter and a power transmission. The control system also performs selection of engine output control and transmission shift control depending upon vehicle driving condition.
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Citations
16 Claims
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1. A control system for controlling distribution of a driving torque derived from a vehicular engine to driven wheels, comprising:
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first means for manually entering a torque demand for the driving torque to be distributed into the driven wheels for controlling vehicular traveling behavior, said first means generating an engine torque demand indicative signal; second means for monitoring an engine revolution speed for producing an engine speed indicative signal; third means for deriving a target engine output torque on the basis of said engine torque demand indicative signal and said engine speed indicative signal; fourth means for detecting a vehicle running condition based on a preselected vehicle driving parameter which affects a conversion of the engine output torque into a thrust force which forces the vehicle to travel, for deriving a correction factor for said target engine output torque on the basis of the detected vehicular running condition, and modifying said target engine output torque on the basis of said correction factor; and fifth means for controlling engine driving condition for adjusting the engine speed to change an engine output torque which coincides with the modified target engine output torque. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification