Control system for automotive vehicle

A control system for an automotive vehicle comprising:

• control means for controlling at least one of vehicle speed, a vehicular distance, driving wheel speed, slip ratio toward a target value;
• means for deriving a target torque of an engine on the basis of said target value;
• vehicle condition control means having means for converting the target torque of said engine to a reference fuel injection amount (Tp2);
• means for deriving an air amount corresponding to a target fuel injection amount (Tp3) of the engine derived on the basis of a target air/fuel ratio determined depending upon said reference fuel injection amount (TP2) and operating condition of said vehicle;
• means for deriving an air amount corresponding the basic fuel injection amount Tp1 of the engine at the stoichiometric air/fuel ration (A/F=14.7) on the basis of an intake air flow rate of the engine and an engine revolution speed;
• and
• means for controlling a throttle valve open degree for controlling the air amount corresponding to said basic fuel injection amount (Tp1) toward the air amount corresponding to said target fuel injection amount (Tp3).

A control method for an automotive vehicle comprising the steps of:

• controlling a vehicular condition of at least one of vehicular speed, vehicular distance, driving wheel speed and slip ratio toward a target value;
• replacing said target value into a target torque of an engine;
• deriving a fuel injection amount of the engine on the basis of the target torque of the engine;
• deriving a target air supply amount on the basis of said fuel injection amount;
• deriving an actual air supply amount of said engine on the basis of detected vehicular condition;
• and
• controlling g the actual air supply amount thus derived toward said target air supply amount.

A control method for an automotive vehicle comprising the steps of:

• controlling at least one of vehicle speed, a vehicular distance, driving wheel speed, slip ratio toward a target value;
• deriving a target torque of an engine on the basis of said target value;
• converting the target torque of said engine to a reference fuel injection amount (Tp2);
• deriving an air amount corresponding to a target fuel injection amount (Tp3) of the engine derived on the basis of a target air/fuel ratio determined depending upon said reference fuel injection amount (TP2) and operating condition of said vehicle;
• deriving an air amount corresponding the basic fuel injection amount Tp1 of the engine at the stoichiometric air/fuel ration (A/F=14.7) on the basis of an intake air flow rate of the engine and an engine revolution speed;
• and
• controlling a throttle valve open degree for controlling the air amount corresponding to said basic fuel injection amount (Tp1) toward the air amount corresponding to said target fuel injection amount (Tp3).

a control system for an automotive vehicle comprises:

• vehicle condition control means for controlling vehicle conditions toward a target value, and obtaining a fuel injection amount for the engine according to a target load signal based on said target value;
• and
• means for deriving a target air supply amount to said engine on the basis of said fuel injection amount derived by said vehicle condition control means, deriving an actual air supply amount of the engine;
• and controlling the detected actual air supply amount toward said target air supply amount.

A control method for an automotive vehicle comprising the steps of:

• controlling a vehicular condition toward a target value;
• replacing said target value into a target load signal of an engine;
• deriving a fuel injection amount of the engine on the basis of the target load signal of the engine;
• deriving a target air supply amount on the basis of said fuel injection amount;
• deriving an actual air supply amount of said engine on the basis of detected vehicular condition;
• and
• controlling g the actual air supply amount thus derived toward said target air supply amount.