A device and method for determining the rotation phase and real-time position of an engine crankshaft

Abstract

The invention discloses a device and method for judging the rotation phase position and the real-time position of an engine crankshaft. The device comprises an engine cylinder head, a camshaft, a housing fixing bolt, a target disc, a target disc fixing bolt, a housing, a photoelectric sensor, a photoelectric sensor fixing bolt, a single chip and a connecting wire. The target disc is provided with an outer edge gap and three concentric gap ring belts. 180 single gaps are uniformly distributed in the outer-circle gap ring belt, 60 double-gaps are uniformly distributed in the middle-circle gap ring belt, and 60 single gaps are uniformly distributed in the inner-circle gap ring belt. A light emitter and a light receiver are respectively arranged on the two sides of each of the concentric gap ring belt and the outer edge gap. According to the change of output signals of the light receiver group, when the target disc rotates along with the camshaft, the directions of clockwise rotation and counterclockwise rotation of an engine are judged and the real-time phase position of the crankshaft is calculated. The device and the method can achieve precise judging to the directions of clockwise rotation and counterclockwise rotation and the phase position of the crankshaft in real time and can measure the rotation speed of the engine.

Description

technical field [0001] The invention belongs to the technical field of engines, in particular to a device and method for determining the rotation phase and real-time position of an engine crankshaft. Background technique [0002] The year-by-year increase in the number of cars in our country has brought enormous pressure to urban traffic, and the phenomenon of traffic congestion is becoming more and more serious. However, when waiting at a red light or in a traffic jam, most vehicles still keep idling, resulting in unnecessary waste of fuel. and air pollution. Idle stop technology (engine flameout at idling speed) can effectively solve this problem, but one of the main problems that need to be faced with the application of idle stop technology is the frequent restart of the engine. Frequent starting of the traditional starter will cause overheating of the starter and damage to the battery. The sharp increase in power consumption and the impact on vehicle ride comfort and ot...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the crankshaft rotation phase cannot be accurately judged under the condition of reverse rotation of the engine, the present invention provides a device and method for judging the crankshaft rotation phase and real-time position of the engine, and the device and method described in the present invention can realize Accurately judge the crankshaft rotation direction and timing phase

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