The invention discloses a control method for an automobile
steep slope slow descending
system. According to the control method, when a
steep slope slow descending button is pressed down, an accelerator pedal is loosened, a
brake pedal is loosened and the current gradient and the current automobile speed meet certain conditions, the pressure of a
brake pipeline is controlled to enable the automobile to travel in a
constant speed; when the accelerator pedal or the
brake pedal is stepped down, controlling of the pressure of the brake pipeline is stopped temporarily, and the automobile travels in a normal downhill speed; and after the accelerator pedal and the brake pedal are both loosened, if the current gradient and the current automobile speed still meet the conditions, controlling of the pressure of the brake pipeline is recovered to enable the automobile to travel in a
constant speed. By adopting the control method, at the time of
steep slope slow descending, a driver can freely control the automobile speed through stepping the brake pedal or the accelerator pedal within a certain speed range, and thus the comfort degree of the driver at the time of using the steep slope slow descending
system is improved.