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Electromagnetic valve driving device capable of carrying out online regulation

A solenoid valve drive, low-voltage drive technology, applied in electrical control, engine control, machine/engine, etc., can solve problems such as error-prone, time-consuming, troublesome modification process, etc., to achieve the effect of improving work efficiency and reducing test workload

Active Publication Date: 2014-11-26
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the optimization process, a large number of performance tests are required. During the test process, it is often necessary to adjust the injector drive current and drive high voltage. The traditional method needs to be realized by modifying the hardware circuit parameters, and the standard parameters of the device do not necessarily meet the requirements. The need for debugging, and the modification process is cumbersome, time-consuming, and error-prone

Method used

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  • Electromagnetic valve driving device capable of carrying out online regulation
  • Electromagnetic valve driving device capable of carrying out online regulation
  • Electromagnetic valve driving device capable of carrying out online regulation

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0024] like figure 1 , figure 2 Shown:

[0025] A solenoid valve drive device capable of online adjustment, including MCU, and also includes a first D / A conversion circuit 1, a second D / A conversion circuit 2, a third D / A conversion circuit 3, a first amplifying circuit 4, a second D / A conversion circuit A comparator 5, a second comparator 6, a third comparator 7, a CPLD logic control circuit 8, a boost controller enabling circuit 9, a boost controller 10, a boost circuit 11, a high voltage drive circuit 12, a low voltage drive Circuit 13, cylinder selection drive circuit 14, high voltage drive tube T2, low voltage drive tube T3, cylinder selection tube T4, sampling resistor R26.

[0026]The MCU is connected to the first D / A conversion circuit 1, the second D / A conversion circuit 2, the third D / A conversion circuit 3 and the CPLD logic control circuit 8; th...

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Abstract

The invention provides an electromagnetic valve driving device capable of carrying out online regulation, which comprises an MCU (Micro Controller Unit), a first D / A (Digital-Analog) conversion circuit, a second D / A conversion circuit, a third D / A conversion circuit, a first amplifying circuit, a first comparator, a second comparator, a third comparator, a CPLD (Complex Programmable Logic Device) logic control circuit, a boost controller enabling circuit, a boost controller, a booster circuit, a high voltage driving circuit, a low voltage driving circuit, a cylinder selection driving circuit, a high voltage driving pipe, a low voltage driving pipe, a cylinder selection pipe and a sampling resistance R. Parameters of the first D / A conversion circuit, the second D / A conversion circuit and the third D / A conversion circuit and logic in the CPLD are subjected to online setting by the MCU. According to the invention, online adjustability of a driving high voltage and a driving current of an electromagnetic valve can be implemented. The electromagnetic valve driving device is used for driving the electromagnetic valve in an electric control common rail oil sprayer of a diesel engine.

Description

technical field [0001] The invention relates to the technical field of electronically controlled engine fuel injection, in particular to an on-line adjustable solenoid valve driving device used in an electronically controlled common rail injector of a diesel engine. Background technique [0002] In the common rail injection system of modern diesel engines, electromagnetic actuators are widely used to precisely control the fuel injection volume, so there are very strict requirements for the opening and closing of the solenoid valve. Since the opening and closing of the solenoid valve are closely related to the driving current, so It is necessary to precisely control the driving current to realize the action of the solenoid valve in order to realize the precise control of the fuel injection quantity. [0003] In order to obtain the best fuel injection performance of different injectors, it is necessary to optimize the appropriate driving mode. In the optimization process, a l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/20
Inventor 曾伟周维张爱云丁珏黄城健
Owner CHINA FIRST AUTOMOBILE
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