Motorcycle motor Hall sensor for simulating engine crankshaft position signal

Abstract

A motorcycle motor Hall sensor used for simulating engine crankshaft position signals is characterized in that a plurality of pairs of N and S magnetic poles are arranged on the ring surface of a motorcycle motor rotor, and one pair of magnetic poles is extended into a pair of special-shaped magnetic poles 1 along the axial direction of a crankshaft; three phase Hall sensors (U, V and W) are adjacently arranged on the periphery of the motor stator at intervals corresponding to the multiple pairs of N and S magnetic poles, a different-magnetic-pole Hall sensor PCB is further arranged on the periphery of the motor stator adjacent to one phase Hall sensor corresponding to the special-shaped magnetic pole 1, and the phase Hall sensor and the different-magnetic-pole Hall sensor are bipolar latch type Hall sensors. The three phase Hall sensors (U, V and W) respectively output three phase Hall signals, the different-magnetic-pole Hall sensor PCB outputs a position Hall signal and is used for simulating an engine crankshaft position signal, the crankshaft position signal is simulated by acquiring the output signals of the Hall sensors and performing operation processing, and the operation efficiency of an engine is further improved.

Description

Technical Field

[0001] The present invention relates to the field of motorcycle operation control equipped with an integrated starter generator system (ISG), and in particular to a motorcycle motor equipped with special magnetic poles and a Hall sensor for simulating an engine crankshaft position signal, thereby better controlling the efficient operation of the engine. Background Art

[0002] When a motorcycle engine is running, it needs to calculate the current crankshaft position and engine speed through the engine crankshaft position signal, and then get the accurate engine injection and ignition timing. At present, most motorcycles equipped with an integrated starter generator system (ISG) on the market, when the engine is running, use a magnetic induction trigger installed on the outside of the motor rotor to sense the boss structure made according to specific specifications on the motor rotor, forming a boss signal (boss structure: a certain number of rectangular boss structures are evenly distributed on the outside of the rotor, and one or two rectangular bosses are removed at a specific position to form a gap. The rotor position corresponding to each boss signal in a circle can be determined through the gap). The boss signal is transmitted to the electronic fuel injection controller (FI-ECU) to determine the injection ignition timing and calculate the engine speed. This method not only requires adding a circle of bosses on the outside of the motor rotor, but also requires installing a larger magnetic induction trigger on the outside close to the boss.

[0003] The existing method of obtaining the crankshaft position signal (i.e., boss signal) increases the manufacturing cost and installation process of the motor. At the same time, the magnetic induction trigger installed on the outside of the motor rotor is more easily damaged, which poses a hidden danger to the reliable operation of the engine. Summary of the invention

[0004] In view of the above problems, the present invention provides a motorcycle motor Hall sensor for simulating the engine crankshaft position signal. The crankshaft position signal is simulated by acquiring the output signal of the Hall sensor and processing it, thereby further improving the operating efficiency of the engine.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A motorcycle motor Hall sensor for simulating an engine crankshaft position signal, wherein the motorcycle motor rotor ring surface is provided with a plurality of pairs of N and S magnetic poles, wherein one pair of magnetic poles is extended along the crankshaft axis to form a pair of special-shaped magnetic poles; corresponding to the plurality of pairs of N and S magnetic poles, the motor stator ring is provided with three phase Hall sensors at adjacent intervals, and corresponding to the pair of special-shaped magnetic poles, the motor stator ring is adjacent to one of the phase Hall sensors and further provided with a special-pole Hall sensor, wherein both the phase Hall sensor and the special-pole Hall sensor are bipolar latch-type Hall sensors.

[0007] As a further improvement of the present invention, corresponding to the pair of special-shaped magnetic poles, the special-pole Hall sensor is arranged axially along the circumference of one of the phase Hall sensors of the motor stator ring, and the three phase Hall sensors output three phase Hall signals respectively, and the special-pole Hall sensor outputs a position Hall signal for simulating the engine crankshaft position signal.

[0008] As a further improvement of the present invention, the three phase Hall sensors are respectively located in adjacent winding slots in the motor stator, and the different magnetic pole Hall sensor is located in a winding slot of the same phase as any one of the three phase Hall sensors.

[0009] The beneficial technical effect of the present invention is as follows: in the motorcycle motor Hall sensor for simulating the engine crankshaft position signal, the motorcycle motor rotor ring surface is provided with multiple pairs of N and S magnetic poles, one pair of which is extended along the crankshaft axis to form a pair of special-shaped magnetic poles; corresponding to the multiple pairs of N and S magnetic poles, the motor stator ring is provided with three phase Hall sensors at adjacent intervals, and corresponding to the pair of special-shaped magnetic poles, the motor stator ring is adjacent to one of the phase Hall sensors and is also provided with a special-pole Hall sensor, the phase Hall sensor and the special-pole Hall sensor both adopt bipolar latch type Hall sensors, the phase Hall signal collected by the three-phase Hall sensor and the position Hall signal collected by the special-pole sensor can simulate the engine crankshaft position signal through further calculation and processing of the phase Hall signal and the position Hall signal, thereby improving the control of the operation efficiency of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the stator structure of the motor described in the present invention;

[0011] Figure 2 It is a schematic diagram of the motor rotor structure described in the present invention. DETAILED DESCRIPTION

[0012] Combined with Figure 1 and Figure 2 , the following is a detailed statement;

[0013] A motorcycle motor Hall sensor for simulating an engine crankshaft position signal, wherein the motorcycle motor rotor ring surface is provided with a plurality of pairs of N and S magnetic poles, wherein one pair of magnetic poles is extended along the crankshaft axial direction to form a pair of special-shaped magnetic poles 1; corresponding to the plurality of pairs of N and S magnetic poles, the motor stator ring is provided with three phase Hall sensors (U, V, W) at adjacent intervals, and corresponding to the pair of special-shaped magnetic poles 1, the motor stator ring is adjacent to one of the phase Hall sensors and further provided with a special-pole Hall sensor PCB, wherein both the phase Hall sensor and the special-pole Hall sensor are bipolar latch-type Hall sensors.

[0014] Usually the motor has 6 or 8 pairs of poles, and the stator usually has 18 winding slots. Here, an 8-pole 18-winding motor is described. Figure 1 and Figure 2 As shown, only three phase signals can be obtained in the 18 winding slots (the electrical angles differ by 120° respectively), and the signals obtained at the winding slots equally divided by 2 are in phase (the high and low level positions of the signals are completely consistent). When the motor rotor rotates one circle, the three phase Hall sensors respectively output three phase Hall signals, and the different magnetic pole Hall sensor outputs a position Hall signal. The three phase Hall signals differ by 120° electrical angle respectively, and the position Hall signal is in phase with one of the phase Hall signals. Based on the three phase Hall signals and one position Hall signal, the engine crankshaft position signal can be simulated.

[0015] Alternatively: corresponding to the pair of special-shaped magnetic poles 1, the special-pole Hall sensor PCB is arranged along the axial direction of one of the phase Hall sensors on the circumference of the motor stator ring, and the three phase Hall sensors (U, V, W) output three phase Hall signals respectively, and the special-pole Hall sensor PCB outputs a position Hall signal for simulating the engine crankshaft position signal.

[0016] Of course, the different magnetic pole Hall sensor and the three phase Hall sensors can be in any position relationship relative to the circumference of the motor stator, but in order to facilitate more convenient installation of the Hall sensor and realize circuit connection, the three phase Hall sensors are respectively located in adjacent winding slots in the motor stator, and the different magnetic pole Hall sensor is located in a winding slot with the same phase as any one of the three phase Hall sensors.

Claims

1. A motorcycle motor Hall sensor for simulating engine crankshaft position signal, characterized in that: The rotor ring surface of the motorcycle motor is provided with a plurality of pairs of N and S magnetic poles, one pair of which is extended along the axial direction of the crankshaft to form a pair of special-shaped magnetic poles (1); corresponding to the plurality of pairs of N and S magnetic poles, three phase Hall sensors (U, V, W) are provided at adjacent intervals on the motor stator ring, and corresponding to the pair of special-shaped magnetic poles (1), a special-pole Hall sensor (PCB) is provided on the motor stator ring adjacent to one of the phase Hall sensors, and both the phase Hall sensor and the special-pole Hall sensor are bipolar latch-type Hall sensors.

2. The motorcycle motor Hall sensor for simulating the engine crankshaft position signal according to claim 1, characterized in that: Corresponding to the pair of special-shaped magnetic poles (1), the special-shaped magnetic pole Hall sensor (PCB) is arranged along the axial direction of one of the phase Hall sensors in the circumference of the motor stator ring, the three phase Hall sensors (U, V, W) respectively output three phase Hall signals, and the special-shaped magnetic pole Hall sensor (PCB) outputs a position Hall signal for simulating the engine crankshaft position signal.

3. The motorcycle motor Hall sensor for simulating the engine crankshaft position signal according to claim 1 or 2, characterized in that: The three phase Hall sensors are respectively located in adjacent winding slots in the motor stator, and the different magnetic pole Hall sensor is located in a winding slot of the same phase as any one of the three phase Hall sensors.

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