Mazda Motor Corporation

Tomoyuki Hirao

Toshiaki Tsuyama

Fumio Kageyama

An engine control system for an automotive vehicle for controlling slippage through fuel-cut and ignition retardation makes a correction in which an engine output control parameter is changed smaller every time a low slippage continuing time reaches each of predetermined threshold times so as to increase engine output, thereby improving acceleration of the vehicle.

Traction control system for vehicles

A traction control system for a vehicle reduces the rate of slip of driving wheels of the vehicle by reducing the traction force transmitted to the road surface from the driving wheels when the driving wheels slip. Whether the vehicle is making a turn is judged, and whether the vehicle is in an instable state which occurs when the vehicle is making a turn. The traction force is reduced by a higher rate when the driving wheels slip while the vehicle is making a turn than when the driving wheels slip while the vehicle is running straight, and the traction force is reduced by a higher rate when the driving wheels slip while the vehicle is in an instable state than when the driving wheels slip while the vehicle is making a turn.

Growing community of inventors

Hiroshima-ken, Japan

Tomoyuki Hirao