Control system for internal combustion engine

Claim 1

A control system for the internal combustion engine, wherein operating elements are controlled by control means to control the operating conditions of the internal combustion engine to a target value set by target value setting means, the system comprising: detection means for detecting the operating conditions of the internal combustion engine and the control conditions of the operating elements; first calculation means for calculating a resistance index specifying a driving force corresponding to the operating conditions under prevailing load conditions from the control amount of the operating elements and the operating conditions of the internal combustion engine detected by the detection means; second calculation means for calculating and supplying to the control means a control amount for control of the operating elements; and memory means for storing information required for calculation by the first and second calculation means in such a way that the information is capable of being rewritten.

Claim 12

A method of controlling an operating condition of an internal combustion engine in a vehicle by controlling an operating element thereof, comprising the steps of: (a) setting a target value for an operating condition of the internal combustion engine; (b) measuring an instantaneous value of said operating condition of said internal combustion engine and a control amount of said operating element; (c) comparing said target value to the measured value of said operating condition; (d) if said target value corresponds to said measured value of said operating condition in step (c), (d1) determining a running resistance of the vehicle while based on said measured value of said operating condition and a control amount of said operating element, and (d2) storing in memory a value corresponding to the running resistance determined in substep (d1); (e) if said target value does not correspond to said measured value of said operating condition in step (c) (e1) determining a required driving force of the vehicle on the basis of the instantaneous value of said operating condition and said value stored in memory which corresponds to the running resistance of the vehicle, and (e2) calculating a required control amount based on the required driving force determined in substep (e1); and (f) controlling said operating element on the basis of said calculated control amount.

Claim 13

A method of controlling an operating condition of an internal combustion engine in a vehicle by controlling an operating element thereof, comprising the steps of: (a) setting a target value for an operating condition of the internal combustion engine; (b) measuring an instantaneous value of said operating condition of said internal combustion engine and a control amount of said operating element; (c) comparing said target value to the measured value of said operating condition; (d) if said target value corresponds to said measured value of said operating condition in step (c), (d1) determining a running resistance of the vehicle while based on said measured value of said operating condition and a control amount of said operating element, and (d2) storing in memory a value corresponding to the running resistance determined in substep (d1); (e) if said target value does not correspond to said measured value of said operating condition in step (c) (e1) determining a required driving force of the vehicle on the basis of the instantaneous value of said operating condition and said value stored in memory which corresponds to the running resistance of the vehicle, and (e2) calculating a required control amount based on the required driving force determined in substep (e1); and (f) controlling said operating element on the basis of said calculated control amount.