Camshaft timing gear structure

Abstract

The utility model provides a camshaft timing gear structure, which is characterized in that a camshaft timing gear is integrally provided with gear signal teeth and gear magnetic line cutting teeth which correspond to sensor signal teeth and sensor magnetic line cutting teeth of a gear ring sensor in position, and the angle between the gear signal teeth and timing mark teeth is 81 degrees + / -30 minutes. According to the camshaft timing gear structure, an integral forging structure is adopted, the problem that the effect of an existing gear can be achieved only by assembling two parts is solved, working efficiency is improved, the manufacturing period is shortened, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gears, in particular to a camshaft timing gear of a diesel engine. Background Art

[0002] Modern advanced truck diesel engines collect camshaft rotation status information or characteristic points, and the ECU processes the information and transmits the injection or stop injection command to the injection pump, so that the camshaft and the injection pump can achieve accurate timing. Therefore, an external part, the ring gear sensor, is added to the traditional camshaft timing gear. When the engine is running, the camshaft timing gear 1 and the ring gear sensor 4 rotate synchronously. The sensor magnetic line cutting tooth 8 of the ring gear sensor 4 cuts the magnetic line, collects signals, and confirms the accurate characteristic point position of the camshaft, thereby achieving accurate injection and sufficient combustion, avoiding the phenomenon of premature ignition, improving engine efficiency, and achieving the effect of saving fuel.

[0003] Structure such as Figures 1-6 As shown, a cylindrical pin 5 is used to position the camshaft timing gear 1 and the ring gear sensor 4, ensuring a tolerance of 81°±30′ between the sensor signal tooth 6 of the ring gear sensor 4 and the timing gear-camshaft timing mark tooth groove. Screws 2, spring washers 3, and thread glue are then used to secure the camshaft timing gear 1 and the gear sensor 4 to prevent the ring gear sensor from falling off or rotating out of sync. This structure requires the assembly of two parts to achieve its desired effect, resulting in a long manufacturing cycle and high cost. Utility Model Content

[0004] In order to solve the above-mentioned problems existing in the existing camshaft timing gear structure, the utility model provides a camshaft timing gear structure.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a camshaft timing gear structure, in which the camshaft timing gear 1 is integrally provided with a gear signal tooth 9 and a gear magnetic line cutting tooth 10 corresponding to the positions of the sensor signal tooth 6 and the sensor magnetic line cutting tooth 8 of the ring gear sensor 4, and the angle between the gear signal tooth 9 and the timing mark tooth 7 is 81°±30′.

[0006] The camshaft timing gear 1 , the gear signal teeth 9 and the gear magnetic line cutting teeth 10 are integrally forged.

[0007] The camshaft timing gear structure of the utility model adopts an integral forging structure, which solves the problem that the existing gear needs to be assembled from two parts to achieve the desired effect, thereby improving work efficiency, reducing manufacturing cycle and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a top view of the existing camshaft timing gear.

[0009] Figure 2 is Figure 1 A-A sectional view.

[0010] Figure 3 is a top view of the ring gear sensor.

[0011] Figure 4 is Figure 3 A-A sectional view.

[0012] Figure 5 is a top view of the camshaft timing gear and ring gear sensor assembly.

[0013] Figure 6 is Figure 5 A-A sectional view.

[0014] Figure 7 is a top view of the camshaft timing gear.

[0015] Figure 8 is Figure 7 A-A sectional view.

[0016] Figure 9 is Figure 7 B-B sectional view.

[0017] In the figure: 1, camshaft timing gear, 2, screw, 3, spring washer, 4, ring gear sensor, 5, cylindrical pin, 6, sensor signal tooth, 7, timing mark tooth, 8, sensor magnetic force line cutting tooth, 9, gear signal tooth, 10, gear magnetic force line cutting tooth. DETAILED DESCRIPTION

[0018] The camshaft timing gear structure of the utility model is shown as Figures 7-9 The camshaft timing gear 1 is integrally provided with a protrusion corresponding to the positions of the sensor signal tooth 6 and the sensor magnetic force line cutting tooth 8 of the ring gear sensor 4, i.e. the gear signal tooth 9 and the gear magnetic force line cutting tooth 10, and the angle between the gear signal tooth 9 and the timing mark tooth 7 is 81°±30′.

[0019] The part of the effective working tooth of the ring gear-sensor cutting magnetic force line is integrated onto the camshaft timing gear through die forging, the angle between the timing mark tooth 7 and the gear signal tooth side is preliminarily ensured through a clamp, and then the 81°±30′ tolerance is ensured through fine milling, so that the effect of assembling multiple parts before modification is achieved.

Claims

1. Camshaft timing gear structure, characterized by: A gear signal tooth (9) and a gear magnetic line cutting tooth (10) corresponding to the positions of a sensor signal tooth (6) and a sensor magnetic line cutting tooth (8) of a ring gear sensor (4) are integrally provided on the camshaft timing gear (1), and an angle between the gear signal tooth (9) and the timing mark tooth (7) is 81°±30′.

2. The camshaft timing gear structure according to claim 1, characterized in that: The camshaft timing gear (1), the gear signal teeth (9) and the gear magnetic line cutting teeth (10) are integrally forged.

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