Unloading device for realizing start-stop function of engine

Abstract

The invention relates to an unloading device for realizing start-stop function of an engine. The unloading device consists of a servo valve mechanism and a control oil line mechanism, and is characterized in that: the servo valve mechanism consists of a locking nut, a limit sleeve, an adjusting screw, a piston, a retainer ring and a piston spring, wherein the adjusting screw is fixed on a supporting frame; a gap between the adjusting screw and the limit sleeve is the opening lift of 1mm of a servo valve-driven exhaust valve; the limit sleeve is positioned inside a piston cavity; the piston spring is positioned inside the limit sleeve; an upper end face of the limit sleeve always contacts the retainer ring; the locking nut is used for fixing the adjusting screw; and the control oil line mechanism consists of a solenoid valve, a control valve, a control valve clamp spring, a control valve return spring and a supporting frame, wherein the solenoid valve and the control valve are distributed on the supporting frame; and the control valve clamp spring and the control valve return spring are arranged on the upper part of the control valve. Due to the adoption of the servo valve, the engine consumes the lowest power in the starting process.

Description

technical field [0001] The invention relates to an unloading device for realizing the function of starting and stopping the engine, and is especially suitable for controlling the starting and stopping of the engine with a large-torque starter motor. Background technique [0002] The pollution of exhaust gas is the biggest when the car is idling, the fuel is not fully burned, energy is wasted, and the economy and emission of the engine are reduced. In order to solve this problem and further improve the performance of the engine, many car manufacturers have introduced start-stop technology on miniature or small cars. The existing engine uses a traditional starter motor during the starting process. When the idle speed control device detects that the vehicle needs power, such as when the air conditioner is turned on, the driver steps on the accelerator pedal or shifts gears, the system will automatically start the engine, and the starter will work. It takes a long time for the ...

AI Technical Summary

Problems solved by technology

The existing engine uses a traditional starter motor during the starting process. When the idle speed control device detects that the vehicle needs power, such as when the air conditioner is turned on, the driver steps on the accelerator pedal or shifts gears, the system will automatically start the engine, and the starter will work. It takes a long time to start the engine to the starting speed. When the engine is stopped / started frequently, the start is unstable.

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