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Electronic preheating relay of diesel engine

A diesel engine, electronic preheating technology, applied in the direction of engine starting, engine components, machine/engine, etc., can solve the problem of lack of over-temperature, overload protection, etc., achieve the effect of light weight, low power consumption, and ensure reliable operation

Pending Publication Date: 2019-04-16
BEIJING CHINA TEXTILE HENGYUAN AUTOMOBILE ELECTRIC APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an electronic preheating relay for a diesel engine, which is used to solve the problem that the existing electronic preheating relay lacks over-temperature and overload protection

Method used

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  • Electronic preheating relay of diesel engine
  • Electronic preheating relay of diesel engine

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Embodiment Construction

[0018] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0019] like figure 1 , figure 2 In one embodiment of the electronic preheating relay of the diesel engine shown in the present invention, the electronic preheating relay of the diesel engine includes a control box 002 fixed on the metal plate 001 for grounding, and the battery wiring is arranged on the control box Terminal B+, load terminal OUT and two input terminals IN1, IN2, a control circuit is provided in the control box 002, and the control circuit includes a signal input unit 100, a single-chip microcomputer control unit 200, a half-bridge control unit 300, a first voltage regulator The circuit 400, the second voltage stabilizing circuit 500 and the oscillation boosting unit 600, the signal i...

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Abstract

The invention relates to an electronic preheating relay of a diesel engine. The relay comprises a control box fixed on a metal plate, and the control box is provided with a battery wiring terminal, aload wiring terminal and two input terminals. The interior of the control box is provided with a control circuit, and the control circuit comprises a signal input unit, a single-chip microcomputer control unit, a half-bridge control unit, a first voltage stabilizing circuit, a second voltage stabilizing circuit and an oscillation boosting unit. The single-chip microcomputer control unit is also connected with a thermistor used for detecting the temperature of an aluminum-based PCB. The single-chip microcomputer control unit can control the output of the load wiring terminal by collecting the input signals of the two input terminals and the temperature of the aluminum-based PCB. According to the invention, the relay can achieve the over-temperature, overload and short-circuit protection andthe functions of timing, out-of-control disconnection and load rejection absorption, and the relay has the advantages of large current, small size, light weight and low power consumption, and can guarantee the reliable operation.

Description

technical field [0001] The invention relates to a diesel engine starting control technology, in particular to an electronic preheating relay of a diesel engine. Background technique [0002] When the diesel engine is started in a cold state, even if the compression is sufficient, the injected fuel does not heat up to the natural temperature due to the low temperature. Therefore, a preheating system must be used to improve the ignition performance. The starting preheating system heats the compressed air through the grid heater before the engine is started in a cold state to improve the starting performance of the engine. In a low temperature environment, the ECU issues a preheating command, the electronic preheating relay is turned on, and the grid heater circuit is connected. The grid heater is installed between the intake pipe of the diesel engine and the cylinder. The grid heater is energized to heat the air in the intake manifold to improve the low-temperature starting p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H5/04H02H3/08H02H3/027F02N19/04F02M31/13
CPCH02H3/027H02H3/08H02H5/042F02M31/13F02N19/04
Inventor 李振华高杰高君龙秦霖李瑞丽王巧福
Owner BEIJING CHINA TEXTILE HENGYUAN AUTOMOBILE ELECTRIC APPLIANCE
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