Why use variable displacement oil pump?
When the engine speed gradually increases, the pump oil volume and pressure of the oil pump will increase with the increase of the speed. After the pump oil volume and pressure meet the lubrication requirements, the continuous increase will consume more engine power. Therefore, the variable displacement oil pump is required. The use of variable displacement oil pump can generally reduce the fuel consumption of passenger car engine by 1% ~ 2%. Variable displacement oil pump adopts vane pump, which is composed of rotor, slide valve, vane, regulating oil chamber, oil pressure control solenoid valve, etc. The oil pressure control solenoid valve is installed on the main oil circuit and controlled by the computer.
When the engine operates at low speed, the computer controls the oil pressure control solenoid valve to reduce the oil pressure in the regulating oil chamber. At this time, the spring pushes the slide valve to move to the left, the volume of the oil inlet chamber is large, and the displacement of the oil pump is large to meet the needs of engine lubrication.
When the engine operates at high speed, the computer controls the oil pressure control solenoid valve to increase the oil pressure in the regulating oil chamber, the slide valve moves to the right, the volume of the oil inlet chamber is small, and the displacement of the oil pump is small, so as to avoid backflow and save energy consumption.
The oil pump for the ride is usually installed in the right crankcase body, and can only be seen by removing the magnetic motor, the right cover of the crankcase, etc. The oil pump usually rarely malfunctions.
How to install the camshaft on a motorcycle requires removing the cylinder head, cylinder block, magneto side cover, and magneto to replace it. Moreover, the camshaft and timing teeth need to be replaced simultaneously, and the crankshaft timing teeth also involve special tools and alignment.
If the shift fork is damaged, it may cause gear loss, jumping, and difficulty changing gears; Due to damage to the shift fork, the transmission is unable to shift the synchronizer to the engaged position, resulting in the synchronizer not being able to mesh perfectly with the engagement sleeve.
The gears inside the motorcycle gearbox are not easily damaged, and once damaged, the main manifestations are the following
The filter accuracy of oil filter is within 10 μ～ fifteen μ Its function is to remove impurities in the oil and protect the normal operation of the bearing and rotor. If the oil filter is blocked, it may cause insufficient fuel injection, affect the service life of the main engine bearing, increase the exhaust temperature of the engine head or even shut down.
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