An electronically controlled egr valve that reduces working temperature and improves working reliability

A technology of EGR valve and working temperature, applied in charging system, combustion engine, machine/engine, etc., can solve the problems of device complexity and increase cost.

Active Publication Date: 2019-02-22
哈尔滨安龙迪环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the reliability of the work, it has developed from non-cooled to cooled, but it has brought about problems such as complexity of the device and increased cost.

Method used

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  • An electronically controlled egr valve that reduces working temperature and improves working reliability
  • An electronically controlled egr valve that reduces working temperature and improves working reliability
  • An electronically controlled egr valve that reduces working temperature and improves working reliability

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Embodiment Construction

[0012] The technical solution of the present invention is: the servo motor 2 controlled by the ECU is sealed in the casting cylinder 1 connected with the valve seat, which effectively shields external electromagnetic interference and forms a reliable protection to prevent foreign objects from colliding with Dust pollution; the shaft end of the servo motor is connected with the star reducer 3-1 with the cycloid gear 3, and the reducer is sealed in the reducer casing. Because all the gear trains are made of polycarbonate material without lubrication; at the output end of the reducer, the crank arm mechanism 13 converts the decelerated circumferential motion of the servo motor into axial motion; the above parts are all in a dustproof box 6 in the low-temperature car body; centering in the copper sleeve 11, the valve rod connected to the spherical valve 9 is compressed by the return spring 7 so that the valve is in a closed state.

[0013] Its working procedure is: drive the servo...

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PUM

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Abstract

The invention discloses an electrical control EGR valve for reducing working temperature and improving working reliability. A diesel engine electrical control EGR technique is one of main techniques for eliminating discharge pollution. For an electrical control EGR structure, a fin structure is adopted to reduce the working temperature of an executing mechanism by enlarging the radiating area of a cold-end air inlet pipe; a cylindrical isolation cover is arranged on a butterfly valve transmission rod and is used for isolating convection and radiating heat transfer of high-temperature air inflow to the driving executing mechanism; an inlet / outlet hole is formed on a dustproof cover of a transmission mechanism to take heat of a transmission component away by utilizing natural convection so as to reduce the working temperature thereof; a metal scraper ring outside a transmission rod scraps carbon deposition attached to a centered transmission shaft so as to protect transmission centering reliability and the linear contact of the surface of a spherical valve and a valve body, and the peripheral contact of the valve rod and the valve body is ensured under eccentric and deflective states so as to realize sealing; and good seal is simultaneously realized under the conditions of oil dirt, carbon deposition and the like on the valve. The structure has the advantages of reducing the electrical control EGR working temperature and improving the working reliability.

Description

technical field [0001] The design of the present invention relates to an exhaust gas recirculation device EGR (Exhaust GasRecirculation) of a gasoline engine and a diesel engine. The device is controlled by the control module through the closed-circuit adjustment of the servo motor and the displacement sensor, and controls the amount of exhaust gas recirculation according to the needs of the engine to reduce harmful substances such as CO, HC, and NOx in the exhaust of the vehicle. Background technique [0002] With the increasingly stringent emission regulations, in order to meet the requirements of Euro II, Euro III, and Euro IV emission regulations, it will be adopted by the automotive industry in the future to reduce harmful substances such as CO, HC, and NOx in automobile exhaust through exhaust gas recirculation devices. It is one of the main technical means and also a core technology that Chinese auto companies must master to participate in international and domestic m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M26/54F02M26/74F02M26/68F02M26/73F02M26/65
CPCY02T10/12
Inventor 李明喜姜延英
Owner 哈尔滨安龙迪环保科技有限公司
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