Honda Giken Kogyo Kabushiki Kaisha

Yuuji Ono

Michio Asumi

Hirokazu Komuro

To improve the maintainability of a vehicle by properly identifying a worn endless belt in a belt-type automatic transmission and informing a driver of the proper belt replacement interval. The belt replacement timing annunciator relies upon the radii of the endless belt wound around a drive pulley and around a driven pulley that vary to produce shifting change gear ratios. Various operating conditions and the actual change gear ratio for the specific operating condition are detected, and a comparison between a reference change gear ratio and the actual change gear ratio is made to determine if belt replacement is necessary. A timer device provides a predetermined observation interval for avoiding erroneous readings and a display is also provided for indicating the necessity of belt replacement.

Growing community of inventors

Saitama, Japan

Yuuji Ono