CN210321599U - Crankshaft position sensor for electric injection motorcycle - Google Patents

Abstract

The utility model relates to a crankshaft position sensor for an electronic injection motorcycle, which comprises a shell, a circuit board and a signal line arranged on the circuit board and extending to the outside of the shell, wherein a Hall chip connected with the circuit board is arranged in the shell, the Hall chip is connected with the signal line through the circuit board, one end of the Hall chip is arranged in the shell, the other end extends out of the shell and is in the same plane with the shell, one end of the shell corresponding to the signal line is provided with a fixed support for fixing the crankshaft position sensor, two ends of the fixed support are respectively provided with at least one fixed interface for connecting a fastening screw, the Hall chip replaces a magnetoelectric coil as a main signal acquisition element, the acquisition precision is still very high under the high and low rotating speeds of an engine, the acquisition data is more accurate, and the signal is constantly kept optimized in the whole acquisition process, the anti-interference performance of the environment is improved, the stability is improved, and the crankshaft position sensor is more convenient to install by arranging the fixing support.

Description

Crankshaft position sensor for electric injection motorcycle

Technical Field

The utility model relates to a sensor field, concretely relates to bent axle position sensor for electricity spouts motorcycle.

Background

The electrojet motorcycle is a new type motorcycle, and is characterized by that it utilizes microcomputer to control oil-spraying nozzle to spray oil to cylinder which needs to work according to the load of engine, and does not supply oil to cylinder which does not work. Compared with the traditional carburetor motorcycle, the electronic fuel injection motorcycle saves more than 20 percent of fuel, compared with the same type carburetor motorcycle; the electronic fuel injection device of the motorcycle engine generally comprises three parts, namely a fuel injection oil way, a sensor group and an Electronic Control Unit (ECU).

The crank shaft position sensor is an indispensable item in an electronic injection motorcycle sensor and consists of a pulse gear ring and a magnetoelectric coil, wherein the pulse gear ring is arranged on a flywheel and rotates along with a crank shaft, and the magnetoelectric coil is changed into a voltage signal and sent to an ECU after sensing the signal of the pulse gear ring during rotation.

The detection of crankshaft position and control of ignition coil current-carrying time are the most basic elements of ignition advance angle of motorcycle engine, so that the detection of crankshaft position is specially important, and the existent crankshaft position sensor is formed from magnetoelectric induction type rotating speed sensor and crankshaft position sensor which are mounted in the distributor by means of upper and lower two layers, and said sensor is formed from permanent magnet induction detection coil and rotor (timing rotor and rotating speed rotor), and the rotor can be rotated together with the distributor shaft. The timing rotor has one, two or four teeth and 24 teeth, and the permanent magnet induction detecting coil is fixed onto the distributor body. If revolution speed sensor signal and bent axle position sensor signal, and the work order of each jar, just can know the bent axle position of each jar, magnetoelectric induction type revolution speed sensor and bent axle position sensor's rotor signal dish also can install on bent axle or camshaft, but this kind uses magnetoelectric coil as its signal of inductor and easily receives the interference, and ECU need design relevant signal processing circuit, leads to the precision lower, and numerical value acquisition is not accurate enough, and current bent axle position sensor installation is convenient inadequately.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to solve the above-mentioned deficiencies of the prior art,

the crankshaft position sensor for the electric injection motorcycle is characterized in that a Hall chip replaces a magnetoelectric coil to achieve more sensitive induction precision, more accurate numerical value acquisition and more convenient installation.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a bent axle position sensor for electricity spouts motorcycle, includes the casing, sets up the circuit board in the casing and sets up on the circuit board and extend to the signal line outside the casing, its characterized in that: the novel crankshaft position sensor is characterized in that a Hall chip connected with the circuit board is further arranged in the shell, the Hall chip is connected with the signal line through the circuit board, one end of the Hall chip is arranged in the shell, the other end of the Hall chip extends out of the shell and is on the same plane with the shell, a fixing support for fixing the crankshaft position sensor is arranged at one end, corresponding to the signal line, of the shell, and at least one fixing interface for connecting the fastening screws is arranged at each of the two ends of the fixing support.

By adopting the technical scheme, a Hall chip replaces a magnetoelectric coil to be used as a main signal acquisition element, a plurality of bosses are arranged on a rotor to work in a matched mode, in order to convey a tooth-missing signal to an ECU, a boss is lacked at a certain position of the rotor, the rotor is more suitable for the ECU compared with the magnetoelectric signal, the Hall chip replaces the magnetoelectric coil to be used as a main signal acquisition element, the rotor is driven by a distributor shaft, the boss and the Hall chip are positioned on the same plane, a gap is reserved between the Hall chip and the boss, when the boss of the rotor rotates to a position corresponding to the Hall chip, the Hall chip acquires electromagnetic pulse data with the boss (the received electromagnetic pulse data are different due to different magnetic profiles generated by different distances of targets, then differential internal analog voltages are generated and then processed into accurate digital output signals), when the boss of the rotor is rotated out of the Hall chip, the Hall chip acquires the electromagnetic pulse data, in the process that the rotor rotates for one circle, the crankshaft position sensor outputs rectangular voltage pulse signals with the same number as the lugs, the signal voltage of the crankshaft position sensor is irrelevant to the rotating speed of an engine, high acquisition precision is still achieved under the high and low rotating speeds of the engine, signal optimization is constantly kept in the whole acquisition process, the anti-interference performance of environmental influences (such as micro-oscillation of an induction target or sudden air gap change) is improved, the stability of the sensor is improved, one end of a Hall chip extends out of a shell, the Hall chip can fully sense a magnetic field and avoid influencing the acquisition precision, one end of the shell corresponding to a signal wire is provided with a fixing support, two ends of the fixing support are provided with fixing interfaces for screw connection, and the crankshaft position sensor can be installed through simple threaded connection.

The crankshaft position sensor for the electric injection motorcycle can be further configured as follows: one end of the fixed support corresponding to the circuit board is provided with a group of fixed columns fixedly connected with the circuit board, and the center of the fixed support is provided with a through hole for a signal line to pass through.

By adopting the technical scheme, the fixing support is connected with the circuit board through the 2 fixing columns, the fixing columns are in interference connection with the circuit board, the center of the fixing support is provided with the through hole for the signal line to pass through, so that the signal line can be fixed at one position through the through hole after extending out of the shell from the circuit board, and the signal line is more conveniently connected with the ECU.

The crankshaft position sensor for the electric injection motorcycle can be further configured as follows: the shell is made of PA 66.

By adopting the technical scheme, the shell is made of PA66 material, and has the advantages of high mechanical strength, good toughness, higher tensile and compressive strength, strong absorption capacity on impact and stress vibration, outstanding fatigue resistance and low cost.

The beneficial effects of the utility model are that replace magnetoelectric coil as main signal acquisition component through hall chip, still have very high collection precision under the high low rotational speed of engine, make the data collected more accurate, keep signal optimization constantly in whole collection process, promote the interference immunity of environmental impact, improve the stability ability of sensor, through setting up the fixed bolster, it is more convenient to make the installation of bent axle position sensor.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is an exploded view of fig. 1.

Fig. 3 is a schematic structural diagram of an embodiment of the present invention.

Fig. 4 is a schematic perspective view of a fixing bracket according to an embodiment of the present invention.

Fig. 5 is a schematic view of an operating state of the embodiment of the present invention.

Detailed Description

As shown in fig. 1-4, a crankshaft position sensor for an electronic fuel injection motorcycle comprises a housing 1, a circuit board 2 disposed in the housing 1, and a signal line 3 disposed on the circuit board 2 and extending to the outside of the housing 1, wherein: still be equipped with the hall chip 4 that is connected with circuit board 2 in the casing 1, hall chip 4 is connected with signal line 3 through circuit board 2, hall chip 4 one end sets up in casing 1, and the other end extends casing 1 outside to be the coplanar in casing 1, casing 1 corresponds the one end of signal line 3 and is equipped with the fixed bolster 5 that supplies bent axle position sensor fixed, the both ends of fixed bolster 5 respectively are equipped with at least one fixed interface 51 that supplies fastening screw to connect, the one end that fixed bolster 5 corresponds circuit board 2 is equipped with a set of fixed column 52 with circuit board 2 fixed connection, the through-hole 53 that supplies signal line 3 to pass is seted up at the center of fixed bolster 5, the material of casing 1 is PA 66.

As shown in fig. 1-5, a crankshaft position sensor is fixed on one side of a motorcycle crankshaft by fastening screws and is mainly used for detecting the position of the crankshaft and the engine speed and transmitting an ignition signal and the engine speed to an ECU (electronic control unit), the crankshaft position sensor is matched with a plurality of bosses on a rotor 6 and transmits a missing tooth signal to the ECU, the plurality of bosses are uniformly distributed on the rotor 6 of the motorcycle, but one boss is absent at a certain position, such as a 24-1 type (360 parts of the rotor are divided into 24 parts, 23 bosses are distributed according to 24 parts, and the 24 th boss is empty); the Hall chip 4 replaces a magnetoelectric coil to be used as a main signal acquisition element, the rotor 6 is driven by a distributor shaft, the boss 61 and the Hall chip 4 are positioned on the same plane, a gap is reserved between the Hall chip and the boss 61, when the boss 61 of the rotor 6 rotates to a position corresponding to the Hall chip 4, the Hall chip 4 acquires electromagnetic pulse data of the boss 61, when the boss 61 of the rotor 6 rotates out of the Hall chip 4, the Hall chip 4 acquires electromagnetic pulse data of the smooth surface of the rotor 6, in the process of one circle of rotation of the rotor 6, the crankshaft position sensor outputs rectangular voltage pulse signals with the same number as the bosses 61, and the rectangular voltage pulse signals are transmitted to the motorcycle ECU through the signal wire 3, because the output signals are rectangular pulses, the magnetoelectric signals are more suitable for the ECU compared with the ECU, and the magnitude of the signal voltage of the magnetoelectric signals is irrelevant to the rotating speed of the engine, and still have high acquisition precision under, because 4 one ends of hall chip extend to outside the casing 1 for the hall chip can fully experience magnetic field, avoids influencing the collection precision.

Claims (3)

1. The utility model provides a bent axle position sensor for electricity spouts motorcycle, includes the casing, sets up the circuit board in the casing and sets up on the circuit board and extend to the signal line outside the casing, its characterized in that: the novel crankshaft position sensor is characterized in that a Hall chip connected with the circuit board is further arranged in the shell, the Hall chip is connected with the signal line through the circuit board, one end of the Hall chip is arranged in the shell, the other end of the Hall chip extends out of the shell and is on the same plane with the shell, a fixing support for fixing the crankshaft position sensor is arranged at one end, corresponding to the signal line, of the shell, and at least one fixing interface for connecting the fastening screws is arranged at each of the two ends of the fixing support.

2. The crankshaft position sensor for an electric injection motorcycle of claim 1, characterized in that: one end of the fixed support corresponding to the circuit board is provided with a group of fixed columns fixedly connected with the circuit board, and the center of the fixed support is provided with a through hole for a signal line to pass through.

3. The crankshaft position sensor for the electric injection motorcycle of claim 2, characterized in that: the shell is made of PA 66.

Images