Engine brake control device
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTakao Komoda
Life of this patent
Estimating the term…
Abstract
An engine brake control device comprising a fuel cutting unit, slippage detecting unit, and a control unit, whereby, when an engine braking operation is underway, the fuel cutting unit stops the supply of fuel to the engine, but if a slippage of the driven wheels of the vehicle is detected by the slippage detecting unit, while the fuel cutting operation is being executed by the fuel supply cutting unit, the control unit prohibits the operation of the fuel supply cutting unit, and therefore, when a slippage of the driven wheels is caused by an engine braking operation, fuel is fed into the engine and the slippage of the driven wheel is prevented.
Claims7
An engine brake control device for a vehicle having a non-driven wheel and a driven wheel driven by an engine having a throttle valve, the brake control device comprising:
- fuel supply means for supplying fuel to the engine;
- a degree of opening detection sensor for detecting a degree of opening of said throttle valve;
- an engine speed sensor for detecting an engine speed;
- a fuel supply controlling means, responsive to an output signal of said degree of opening detecting sensor and an output signal of said engine speed sensor, for stopping a supply of fuel to the engine when the engine speed is higher than a predetermined speed at which a fuel supply is to be stopped when said throttle valve is closed;
- first means for detecting a speed of rotation of said driven wheel;
- second means for detecting a speed of rotation of said non-driven wheel;
- control means for controlling said fuel supply controlling means in response to an output signal of said first means and an output signal of said second means to prohibit a fuel supply stopping operation by said fuel supply controlling means and allow fuel to be supplied to the engine when said speed of rotation of said driven wheel is lower than said speed of rotation of said non-driven wheel.
Dependencies are inferred from the claim text.