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Method for modifying flywheel ring gear tooth profile error

A flywheel ring gear and tooth profile error technology, applied in fuel injection control, engine control, machine/engine, etc., can solve problems such as injection angle and injection width error, and achieve the effect of solving injection angle and injection width error

Inactive Publication Date: 2014-08-20
CHINA NORTH ENGINE INST TIANJIN
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a flywheel ring gear tooth profile error correction method for the problem of spray angle and spray width error caused by the machining error of the tooth profile on the flywheel ring gear

Method used

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  • Method for modifying flywheel ring gear tooth profile error

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Embodiment Construction

[0012] Such as figure 1 As shown, a flywheel ring gear tooth shape error correction method, the steps are as follows: ⑴Drag the flywheel ring gear with a motor at a constant speed, collect the tooth shape signal on the ring gear through a speed sensor and record it with an oscilloscope; ⑵Under constant speed rotation, 60 -For a ring gear with 2 teeth, the pulse width of each tooth shape should be 6oCA under ideal conditions. Calibrate from the first tooth after the missing tooth signal, record the error value of each tooth, and form a MAP diagram; (3) Make the engine in In the online working state, start counting the teeth after detecting the missing teeth of the ring gear, and prepare for injection; (4) The error correction method corresponding to each tooth is 6oCA under the ideal state plus the corresponding tooth number in the MAP diagram in step (2) The error value, the output after calculation is the actual angle of the tooth, which is used for injection control.

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Abstract

The invention relates to a method for modifying the flywheel ring gear tooth profile error. The method comprises the following steps that firstly, a flywheel ring gear is dragged through a motor at a constant speed, a revolution speed transducer is used for collecting tooth profile signals of a gear ring, and an oscilloscope is used for recording the tooth profile signals of the gear ring; secondly, under constant-speed revolution, for a gear ring with 2-60 teeth, the pulse width of each tooth profile should be 6o CA under the ideal state, a first tooth is calibrated from a tooth missing signal, and error values of all teeth are recorded to form a MAP graph; thirdly, an engine is in an online working state, the teeth begin to be counted after it is detected that the gear ring lacks the teeth, and ejecting preparation is carried out; fourthly, all errors of the teeth are modified based on 6o CA obtained under the ideal state and the error values which correspond to the tooth numbers and are inquired in the MAP graph obtained in the second step, and the actual angles of the teeth are output after the operation for ejection control. The method can effectively solve the ejection angle and ejection width errors caused by the tooth profile errors, and the angle of the engine can be controlled more accurately.

Description

technical field [0001] The invention belongs to the field of diesel engine control, and in particular relates to a method for correcting the tooth profile error of a flywheel ring gear. Background technique [0002] In the control system based on high-pressure common rail and unit pump, the injection angle and injection width are controlled by measuring the crankshaft and the cam flywheel ring gear, but the current control is based on ignoring the machining error caused by the tooth profile. The spray angle and spray width error. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a flywheel ring gear tooth profile error correction method for the problem of spray angle and spray width error caused by the machining error of the tooth profile on the flywheel ring gear. [0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems: [0005] A flywheel ring gear t...

Claims

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Application Information

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IPC IPC(8): F02D41/02F02D41/30
Inventor 孟长江贾利褚全红周帅赵玲玲
Owner CHINA NORTH ENGINE INST TIANJIN
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