A temperature sensor installation structure of a motorcycle engine

Abstract

The invention discloses a temperature sensor mounting structure of a motorcycle engine. The temperature sensor mounting structure comprises a cylinder head and a cylinder head cover, wherein the cylinder head cover is arranged at the top part of the cylinder head, a bolt hole is formed in the cylinder head, and penetrates through the cylinder head, the bolt hole is communicated with an oil supply pipeline of a lubricating oil pump, the cylinder head cover is internally provided with an oil outlet for downward oil outlet, a first oil supply passage is formed in the cylinder head and the cylinder head cover and is communicated with the bolt hole and the oil outlet, and a probe of the temperature sensor is arranged in the first oil supply passage. The temperature sensor mounting structure has the advantages that the detection of oil temperature is accurate, the structure strength of the cylinder head is high, the chip residues are avoided, and the like.

Description

technical field [0001] The invention relates to a motorcycle engine, in particular to a temperature sensor installation structure of the motorcycle engine. Background technique [0002] see Figure 1-Figure 3 , in the prior art, the engine of motorcycle comprises cylinder head 1 and the cylinder head cover 2 that is arranged on the top of cylinder head 1, and cylinder head 1 is provided with the bolt hole 3 that runs through cylinder head 1, is provided with cylinder in bolt hole 3. Bolts for connecting the head cover 2 to the cylinder head 1, and meanwhile, the bolt holes 3 communicate with the oil supply pipeline of the lubricating oil pump in the engine. In order to measure the oil temperature of the lubricating oil, a mounting hole 60 for installing the temperature sensor 6 is usually arranged on the cylinder head 1, and the mounting hole 60 is communicated with the bolt hole 3, so that the temperature sensor 6 can detect the temperature of the lubricating oil. oil temp...

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Problems solved by technology

[0003] 1. Since the installation hole 60 is connected to the bolt hole 3, and there are bolts in the bolt hole 3, the temperature sensor 6 cannot extend into the bolt hole 3, that is, the temperature sensor 6 cannot detect the flow in the bolt hole 3. The oil temperature of the lubricating oil causes a large difference between the detected value and the real value, resulting in inaccurate oil temperature detection;

[0004] 2. Since the temperature sensor 6 needs to measure the oil temperature in the bolt hole 3, it is necessary to drill a connecting hole on the wall of the bolt hole 3, thereby reducing the structural strength of the bolt hole 3. When the bolt tightens the cylinder head 1 Finally, the deformation of the cylinder head 1 is intensified, especially the deformation of the installation hole of the right bearing 81 is the most obvious, which will affect the installation accuracy of the cylinder head 1, the camshaft 80 and its components, the rocker arm 83 and other transmission components, and then affect the engine as a whole. performance;

[0005] 3. When the mounting hole 60 is drilled, the intersection of the mounting hole 60 and the bolt hole 3 is prone to burrs, and the burrs are difficult to find and remove. The phases separate and form chips, and the chips enter the mating surface of the rocker arm 83 and the cam with the lubricating oil, causing abnormal wear of the cam and the rocker arm 83;

[0006] 4. Due to the short distance between the temperature sensor 6 and the spark plug 7, the data collected by the temperature sensor 6 is easily interfered by the high-voltage pulse voltage of the spark plug 7, which affects the accuracy of the collected data

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