First, the function and role of gear
Tanker transmission gear is divided into low speed, medium speed, high speed and reverse gear, Dongfeng EQ1060 tanker \ EQ1110 tanker \ EQ5160 tank \ EQ1141 tanker, series of five gear transmission are in the first and second gear It is a low gear, a three gear is a medium gear, and a four or five gear is a high gear. The lower the gear, the greater the speed ratio, the lower the drive shaft speed of the tank car, and the greater the drive torque on the wheel, the greater the traction of the car; conversely, the smaller the drive force of the tank car. For this reason, when the tanker needs a large traction (such as starting, uphill, bad road, etc.), it should use a block or a second block, when it is from low to high or high to low, or When turning, driving, and ramping, the third gear is selected. When the road conditions are good, four or five gears should be used.
Second, shift method
If the upshift (commonly known as the upshift) is too early and the downshift (commonly referred to as the downshift) is too late, the powertrain will cause jitter in the drive train and the engine will run unstably and speed up the damage of some components; on the contrary, if the upshift time is too late, A premature downshift can cause the engine to wear faster and use less fuel. Therefore, the tanker must change the gear according to the vehicle load, road conditions, and driving requirements while driving.
1. Low-speed gear change high-speed gear: Increase the throttle to increase the vehicle speed before upshifting. When reaching the speed suitable for a high-level gear change, immediately release the throttle, quickly depress the clutch pedal and push the gear lever to Neutral, then lift the clutch pedal, stop and then step on, then the shift lever is accurately shifted from the neutral gear to a higher gear, then gently lift the clutch pedal, and gradually increase the throttle, so that the car continues to drive.
2, high-speed gear change low gear: downshift should release the throttle while pressing the clutch pedal, the shift lever to the neutral gear, then lift the clutch and immediately step on the throttle (plus empty oil), and then quickly depress the clutch Pedal, shift the gear lever into a lower gear, then slowly lift the clutch pedal, increase the throttle at the same time, so that the car continues to drive. Dongfeng EQ5160 and EQ1141G series tankers are equipped with supercharged engines. Because the supercharged engine has the characteristics of low-speed torque and high torque at medium and high speeds, it is necessary to reduce the speed in advance on the uphill slope without dragging.
The above is the “two-legged clutch†shifting method. The purpose is to make the circumferential speeds of the two gears equal or similar when shifting, and to avoid noise and damage caused by the gear collision.
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