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Start-up protection circuit for automobile engine

A technology of automobile engine and protection circuit, which is applied in the direction of engine starting, engine motor starting, engine components, etc., can solve the problems of starter damage, impact, etc., and achieve the effect of simple circuit structure, easy implementation, and good application prospects

Inactive Publication Date: 2013-03-06
WUXI INST OF COMMERCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two problems in this starting protection method: ① If the driver does not release the ignition switch in time after the engine starts successfully, the starter will be driven by the engine to rotate at a high speed, which will easily cause damage to the starter (when starting, the starter will drive The speed of the engine is 150-200r / min. After the start is successful, the minimum speed of the engine is 700r / min). The starting teeth are also easy to cause damage to the starter

Method used

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Embodiment Construction

[0011] The present invention will be further explained below.

[0012] The objective of the present invention can be achieved by using the original normally closed oil pressure switch on the automobile engine and adding a protective relay. The simplified structure of the automobile engine starting protection circuit of the present invention is as figure 1 As shown, it includes battery 1, ignition switch start gear 2, starter 3, start relay 4, ignition switch ignition gear 5, protection relay 6 and normally closed oil pressure switch 7, wherein: one output of the battery 1 passes through The ignition switch starting gear 2, the starting relay 4 and the protection relay 6 are connected to the starter 3. The other output of the battery 1 is connected to the starter after the ignition switch 5, the normally closed oil pressure switch 7 and the protection relay 6 in turn 3. In order to meet actual needs, the circuit also includes an oil warning lamp 8 which is connected to the output...

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PUM

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Abstract

The invention discloses a start-up protection circuit for an automobile engine, which belongs to the technical field of protection of an automobile starter. The circuit comprises a storage battery, an ignition switch starting gear, a starter, a starting relay, an ignition switch igniting gear, a protective relay and a normally closed oil pressure switch. One output of the storage battery is connected with the starter after sequentially passing through the ignition switch starting gear, the starting relay and the protective relay while the other output of the storage battery is connected with the starter after sequentially passing through the ignition switch starting gear, the normally closed oil pressure switch and the protective relay. According to the start-up protection circuit for the automobile engine provided by the invention, the starter is powered off automatically after the starter starts successfully, so that the starter is protected more safely.

Description

Technical field [0001] The invention relates to an automobile engine starting protection circuit, belonging to the technical field of automobile starter protection. Background technique [0002] The traditional automobile engine starting circuit is composed of battery, ignition switch starting gear, starter and starting relay. When the ignition switch starting gear is closed, the power of the coil terminal of the starting relay is turned on, and the switch terminal of the starting relay is closed, then the starter When the power supply is connected, the starter rotates and drives the engine to rotate. After the start is successful, loosen the ignition switch, the ignition switch start gear is disconnected, the switch terminal of the starter relay is disconnected, and the starter exits work. There are two problems with this starting protection method: ① If the driver does not release the ignition switch in time after the engine is started successfully, the starter will in turn be...

Claims

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Application Information

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IPC IPC(8): F02N11/08F01M1/20
Inventor 王美娟
Owner WUXI INST OF COMMERCE
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