Method, device and system for detecting position of crankshaft of hybrid vehicle and electronic equipment

A crankshaft position and hybrid vehicle technology, applied in the computer field, can solve problems such as the inability to determine the position, rotational speed and large position error of the crankshaft after stopping.

Active Publication Date: 2021-07-02
WEICHAI POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the frequency and amplitude of the crankshaft speed sensor signal change with the speed, when the engine is about to shut down, the crankshaft speed decreases, and the frequency and amplitude of the output signal of the crankshaft sensor decrease rapidly at this time, and the speed and position errors are large, so it is impossible to determine the stop Position of the crankshaft after the engine is turned off

Method used

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  • Method, device and system for detecting position of crankshaft of hybrid vehicle and electronic equipment
  • Method, device and system for detecting position of crankshaft of hybrid vehicle and electronic equipment
  • Method, device and system for detecting position of crankshaft of hybrid vehicle and electronic equipment

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Embodiment approach

[0071] Optionally, in another embodiment of the present application, one embodiment of step S203, including:

[0072] According to the first angular information of the crankshaft, the crankshaft rotation is determined to determine the change cycle of the first spinning position variable as the nth rotation period of the first spinning position variable in the angle of the crankshaft cycle.

[0073] The above examples are continued, in which the angle of the crankshaft rotation can be calculated every time a spinning period, the engine's work cycle can be rotated, the crankshaft needs to be rotated for two weeks, and 12 of the 12 rotation cycles can be obtained, that is, 360 * 2 / 12 = 60 °, then when the first angle information is acquired, such as 132 °, the first angular information is directly rotated at an angle of 60 °, the first angle information has been passed by 2. The result of a variable cycle, and the result of 12 °, that is, the current rotation period of the first sp...

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Abstract

The invention provides a method, device and system for detecting the position of a crankshaft of a hybrid vehicle and electronic equipment. The method for detecting the position of the crankshaft of the hybrid vehicle comprises the steps of monitoring the current rotating speed of the crankshaft in real time after a power-off instruction is obtained; then, acquiring first angle information of the crankshaft and a first resolver position variable of a motor shaft; then, according to the first angle information of the crankshaft, determining that the current resolver period of the first resolver position variable is the Nth resolver period; taking the current resolver period of the first resolver position variable as a starting period, and starting to calculate the number of resolver periods after the starting period; obtaining a second resolver position variable and the currently accumulated number of resolver periods; and according to the second resolver position variable, the Nth resolver period and the currently accumulated number of resolver periods, determining the angle information of the crankshaft after an engine stops rotating. Therefore, the purpose of accurately determining the position of the crankshaft after stopping during parking and flameout is achieved.

Description

Technical field [0001] The present application relates to the field of computer technology, and more particularly to detecting methods, devices, systems, and electronic devices for mixing automobile crankshaft positions. Background technique [0002] Currently, the engine is synchronized to identify the spiral position of the crankshaft and the polytead position of the camshaft, so at least the crankshaft is required to transfer a circle to synchronize. [0003] Since the frequency and amplitude of the crankshaft speed sensor signal varies with the rotational speed, the crank speed is lowered when the engine is about to turn off, and the frequency and amplitude of the crank sensor output signal are rapidly decreased, and the speed and position error are large, so it cannot be determined. The position of the crankshaft when the flame is stopped. Inventive content [0004] In view of this, the present application provides a method, apparatus, system, and electronic device for mixi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W40/12B60W20/00
CPCB60W40/12B60W20/00B60W2510/06
Inventor 王裕鹏韩福强王涛李忠银
Owner WEICHAI POWER CO LTD
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