CN202091046U

CN202091046U - Electric control valve driving mechanism of automobile engine

Info

Publication number: CN202091046U
Application number: CN2011201207839U
Authority: CN
Inventors: 许星
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-22
Filing date: 2011-04-22
Publication date: 2011-12-28
Anticipated expiration: 2021-04-22

Abstract

The utility model discloses an electric control valve driving mechanism of an automobile engine. The electric control valve driving mechanism comprises a high-pressure oil supply pump (1), a common rail (2), an electrohydraulic actuator (3), a rocker arm mechanism (4) and the like. With the adoption of the electric control valve driving mechanism, the air throttle, the camshaft and the starter of the engine can be omitted, so that the purpose of saving energy and reducing emission of the engine can be achieved while the structure of the engine is simplified.

Description

The automotive electronic control system valve actuating mechanism

Technical field

The utility model is a kind of automotive electronic control system valve actuating mechanism, can be according to the operating mode of motor, control the lift of the opening of valve, close moment and valve freely.

Background technique

Conventional engines is to utilize the control closure to change the air quantity that enters cylinder, and by monitoring that air mass flow decides fuel injection quantity.For this mechanism, driver's open out is exactly the aperture at the control closure in fact, thus the power of control motor.This control mode is owing to exist pumping loss, and energy loss is bigger.In addition, a lot of mechanisms are arranged now, though the port timing of motor is changed to some extent, its control degrees of freedom not enough, the port timing that can't accomplish freely to control motor.

Summary of the invention

The purpose of this utility model just is to use the valve actuating mechanism of computer control to replace the valve actuating mechanism that is using, simplify the structure of motor, closure, camshaft and the starter motor of cancellation conventional engines, eliminate the pumping loss of engine aspirating system, make motor reach purpose energy-conservation, that reduce discharging.In addition, owing to there has not been the obstruction of closure, fresh air enters more smooth and easy, makes burning more abundant, and toxic emission still less.Change valve lift and switching time, can control the air quantity that sucks motor, power loss is remained on extremely low level.

The technological scheme that its technical problem that solves the utility model adopts is:

A kind of automotive electronic control system valve actuating mechanism is characterized in that comprising: a high-pressure fuel-feed pump [1]; The common rail [2] that each valve is shared; Electro-hydraulic actuator [3] and rocker arm body [4].

This mechanism is in conjunction with the content of diesel common rail technology, and the soft rocking arm and the pitman arm shaft mechanism of orthodox car motor with electric control hydraulic pressure, with hydraulic control machinery, thereby reaches the purpose of control valve timing and lift.

Description of drawings

Fig. 1 is the utility model plane structure chart.

Among the figure: 1. high-pressure fuel-feed pump 2. is total to rail 3. electro-hydraulic actuators 4. rocker arm bodies

Embodiment

With reference to Fig. 1, the control strategy of native system is with electric control liquid, with the plunger of hydraulic control system electro-hydraulic actuator.Control chamber links by a draining hole and a return tube by the high speed electromagnetic opening of valves.When the solenoid valve no electric circuit, the sealing of draining hole, when hydraulic coupling surpasses the elastic force summation of the hydraulic coupling that is applied on the pressure-bearing conical surface of electro-hydraulic actuator plunger bottom and return spring on valve control plunger, plunger moves downward takes a seat, move under rocking arm one side direction that is connected with the plunger bottom, and move engine throttled back at this moment on the other side direction of rocking arm.When ECU by each sensor of motor to engine operating condition when solenoid valve is triggered, open in the draining hole, pressure in the control chamber reduces, hydraulic coupling on the plunger also reduces, in case when this hydraulic coupling eases down to the elastic force summation that is lower than the power that acts on the pressure-bearing conical surface of electro-hydraulic actuator plunger bottom and return spring, the electro-hydraulic actuator plunger just will move upward, and move on rocking arm one side direction that is connected with the plunger bottom, and move under the other side direction of rocking arm, engine valve just is opened.

By above-mentioned working principle as can be known, the moment that engine valve is opened is controlled constantly by the energising of high-speed electromagnetic valve, the close moment of valve is by the power-cut time control of high-speed electromagnetic valve, the current"on"time length of the opening time of valve by solenoid valve decides, and dredge oil amount what the aperture size of high-speed electromagnetic valve determined, thereby controls the lift of valve indirectly.

Claims

1. an automotive electronic control system valve actuating mechanism is characterized in that comprising: a high-pressure fuel-feed pump [1]; The common rail [2] that each valve is shared; Electro-hydraulic actuator [3] and rocker arm body [4].