PURPOSE: To prevent decreasing of the ground contact force of each of front wheels, by a method wherein, in a front engine, front drive car, the spring constant of a spring means, located parallel to a damper, is varied according to the output of an acceleration sensor, and a spring constant ratio between a front and a rear wheel is varied.
CONSTITUTION: An acceleration signal, detected by an acceleration sensor 5, is inputted to a controller 3. When the acceleration exceeds a given value and indicates sudden start and sudden acceleration, the controller 3 outputs a control signal to actuators 1a and 2a, a spring constant KF of a spring 1b of each of front wheels is decreased, and a spring constant KR of a spring 2b of each of rear wheels is increased. Thus, KF/KR is decreased, and this prevents decreasing of the ground contact force of each of the front wheels. In an ordinary condition, the output of the acceleration sensor 5 is decreased, and a spring constant ratio is increased. This constitution permits prevention of reduction in the ground contact force, produced when a car starts suddenly, of each of the front wheels.
TANAKA KEN
ANAMI YOSHIAKI
TOKUNAGA TOSHIMICHI
| JPS57160707A | 1982-10-04 |