What is a car half conversion
Automobile half transition usually refers to the clutch half linkage state , which is an important concept in manual transmission vehicle operation. The semi-linkage state of the clutch means that the clutch is in the middle transition area between linkage and non-linkage, that is, the clutch pedal is partly pressed down, and the power part of the engine is transferred to the gearbox, so that the vehicle can move slowly and smoothly .
Judgment method
Listen to the engine sound : in neutral state, the engine sound is easier; When the clutch pedal is lifted to the position where it begins to transmit power, the engine sound will become muffled, especially under a large load, this change is more obvious .
Feel vehicle jitter : when the clutch pedal is lifted to the semi-linkage state, the vehicle will change from a static state to slow movement, at this time will feel slight jitter, especially when the hands gently on the steering wheel, this jitter is more obvious .
foot sense judgment : when the engine sound changes, the vehicle slightly vibration at the same time, the clutch pedal will have the feeling of top foot, indicating that the clutch is in a semi-linkage state .
Application scenario
The clutch semi-linkage state is mainly used in the following scenarios:
Starting : At the beginning, the vehicle can be smoothly moved from a standstill through the semi-linkage state.
shift : During the shift process, the gear position can be smoothly changed through the semi-linkage state.
Complex road condition : In complex road conditions or in the case of fine control of speed, the semi-linkage state can provide more flexible control.
Matters needing attention
Avoid long-term half-linkage : keeping the half-linkage for a long time will lead to overheating and wear of the clutch, which should be avoided as far as possible.
test requirements : Semi-coupled driving is allowed in the venue test, but not in the off-site test .
The role of automobile semi-linkage mainly includes the following aspects:
Smooth start : When the vehicle starts, the semi-linkage can digest the speed difference between the engine and the gearbox, so that the vehicle can start smoothly and avoid channeling .
anti-skid : at the beginning of the slope, the semi-linkage can be used to keep the vehicle stationary to prevent slipping, and then slowly release the hand brake to successfully complete the start of the slope .
driving in congested road : in congested road conditions, semi-linkage can make the vehicle keep intermittent progress, especially in a short distance to follow the car, can effectively control the speed .
reversing control speed : when reversing, the vehicle speed can be controlled through semi-linkage, making the operation more flexible .
reduce impact : in the semi-linkage state, the clutch is in the state of rotating and sliding, which can provide flexible power, reduce the impact between the engine speed and the speed, and make the shift and start more smoothly .
The definition and principle of semi-linkage :
Semi-linkage refers to the working state of the clutch between disengagement and engagement, so that the engine and gearbox are in a state of spinning and sliding. Specifically, when the driver presses down the clutch pedal, the pressure of the clutch pressure plate gradually decreases, resulting in a gap between the driving disk and the driven disk, and both rotation and sliding exist .
Proper use of semi-linkage method :
When starting : At the beginning, let the clutch be in a semi-linkage state, gradually fuel the door, and then completely release the clutch after the vehicle begins to move forward.
ramp start : pull the hand brake, let the clutch in the semi-linkage state, keep static anti-skid, and then slowly release the hand brake .
Congested road : In congested road conditions, vehicle speed is controlled by semi-linkage to reduce the necessity of frequent shift .
reversing : use semi-linkage to control the reversing speed to make the operation more stable .
Precautions :
Reduce wear : in the semi-linkage state, the clutch wear is larger, and the half-linkage time should be shortened as far as possible, and the "half-linkage - separation - half-linkage" method is used to operate .
good driving habits : usually to develop good driving habits, do not use the clutch to leave the pedal, regularly check the status of the clutch disc, timely maintenance or replacement of the damaged clutch disc .
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