Engine overspeed protection and control method

An engine overspeed and protection control technology, applied in engine control, combustion engine, machine/engine, etc., can solve problems such as the action of the engine overspeed protection device, affecting the normal use of the engine, and the failure of the protection device, so as to improve reliability and save electricity. , the effect of protecting personal safety
CN102720595AActive Publication Date: 2012-10-10HEBEI HUABEI DIESEL ENGINE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEBEI HUABEI DIESEL ENGINE
Publication Date
2012-10-10

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Abstract

The invention discloses an engine overspeed protection and control method, which is based on an engine overspeed protection and control system and particularly comprises the following steps: A, detecting the working condition of a fuel cut electromagnetic valve; B, detecting the engine speed by a speed sensor; C, automatically starting protection in case of overspeed; D, starting power-off protection for the engine; E, detecting the working condition of the speed sensor; and F, manually detecting whether or not the system is normal. The engine overspeed protection and control method can randomly detect all inactive elements in the system during the normal operation of the engine, so that failure in circuits and elements of the system can be detected timely; when the failure occurs, an alarm can be issued timely and displayed to the operator, so as to remind the operator of timely maintenance; therefore, the safety performance of the engine is greatly improved, and the personal safety of the user can be efficiently protected.
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Description

technical field

[0001] The invention relates to the field of engine protection, in particular to a protection system and method for overspeed protection of the engine when the engine is overspeed. Background technique

[0002] During the driving process of the car, the phenomenon of engine overspeed often occurs, which not only damages the engine, but also is extremely unsafe for users. The overspeed protection device is a device that automatically cuts off the fuel supply of the engine and makes the engine exit the overspeed state when the engine overspeeds due to technical failure, thereby protecting the engine. At present, overspeed protection devices have been widely used in generator sets and other fields, and are generally realized through the following methods: the controller collects the signal of the engine speed sensor, and once it detects that the engine speed exceeds the limit value, the controller outputs a control signal to the fuel cutoff solenoid valve throug...

Claims

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