Slip control system for a vehicle provided with an internal combustion engine

Claim 1

A vehicle comprising: a vehicle body; drive wheels on the vehicle body; non-drive wheels on the vehicle body: an internal combustion engine in the vehicle body; a gear train for kinematically connecting the internal combustion engine to the drive wheels; said internal combustion engine comprising: an engine body having a plurality of cylinders; spark plugs arranged at each of the cylinders; intake means for introducing air into the cylinders; exhaust means for removing resultant exhaust gas from the cylinders; fuel introducing means for introducing an amount of fuel into the intake means for defining a combustible air-fuel mixture to be introduced into the cylinders; means for controlling the amount of fuel to be introduced into the intake means from the fuel introducing means for controlling the air-fuel ratio of the air-fuel mixture; means for controlling timing of a spark signal to each spark plug to obtain a desired ignition time; means, responsive to a knocking condition of the engine, for adjusting said desired setting of the ignition timing for suppressing knocking in the engine; means for detecting the speed of the drive wheels of the vehicle; means, based on the detected value of the drive wheel speed, for detecting slippage of the drive wheels when the vehicle is accelerated; means, based on the detected slippage at the drive wheels, for allowing a setting of the torque applied to the drive wheels to be reduced, to suppress slippage during an acceleration of the vehicle; and means for cancelling the operation of the knocking control means so that a control of the ignition timing based on the engine knocking condition is stopped during the operation of said torque control means.