Before the stalling of the tractor engine, many pilots often use a few throttles, that is, they suddenly increase or decrease the throttle, hoping to burn the remaining oil in the cylinder. In fact, it is counterproductive, and often the throttle will bring about the following hazards:
First, due to the large and small throttles, high and low engine speeds, crankshaft journals, connecting rod journals, etc., the alternating impact load is also large and small, and internal stress increases. It is easy to produce fatigue damage and it is easy to break the crankshaft over time.
The second is that the throttle is often throttled, and the linkage rods are easily deformed. The pistons and cylinder liners are eccentrically worn, the compression force of the cylinders is reduced, the starting is difficult, the power is decreased, and the fuel consumption is increased.
The third is the throttle, so that when the amount of fuel supply is large and small, resulting in incomplete combustion of fuel, pistons, piston rings, valves and other carbon, accelerate wear and tear.
The fourth is that because of the throttle, the internal stress of the cylinder head and the plane of the body is concentrated, resulting in air leakage from the cylinder and easily damaging the cylinder head.
The fifth is the frequent thumping of the throttle, which causes sudden increase in the frequency of valve spring elongation and compression and is prone to fatigue fracture.
Sixth, because of the throttle, the fuel that enters the cylinder is too late to burn, and it will fall into the oil pan, dilute the oil, and accelerate the wear of the crankshaft and other mechanical parts. At the same time, the exhaust pipe emits black smoke, polluting the environment and wasting oil.
In view of the above, the throttle is harmful and unhelpful. In order to ensure the safety of the tractor's engine parts and keep it in a good state of technology, the driver must not throw the throttle.