What is the function of the clutch pedal free stroke?

Purpose: The pedal free stroke is to preventBrake padsand the brake disc is too tight and overheats, causing the brake to fail while setting the function.

The free stroke is the brake pedal.

The distance at which the brakes don't work when you step on it. Without free travel, applying the brakes can be uncomfortable and may even cause the wheels to lock up on their own.

Adjustment: The free stroke of the pedal of the hydraulic brake is generally 15-20mm, and the adjustment should be adjusted according to the value specified by the model. The size of the free stroke of the brake pedal directly affects the braking time and braking distance.

Therefore, be sure to check whether the free stroke of the brake pedal is appropriate before leaving the car.

Clutch

When the clutch is disengaged, the pedal stroke that needs to be pressed to eliminate the free clearance of the clutch and the wear and deformation of the parts of the disengagement mechanism and the control mechanism is called the free stroke of the clutch pedal. The free travel of the clutch pedal is generally 1520mm.

When checking, use a ruler against the bottom plate of the cab, first measure the height of the pedal when it is completely relaxed, and then press the pedal lightly with your hand, and then measure the height of the pedal when you feel the resistance increases, and the height difference between the two measurements is the free stroke of the clutch pedal.

The free stroke of the clutch pedal is mainly used to prevent the clutch from slipping due to the fact that the outer end of the release lever cannot be moved back after the disc wears and thins. (After the driven disc is thinned, the lever is separated and moved back under the action of elastic force, so it has a certain free gap).

In order to prevent the friction plate of the driven disc from wearing and thinning, it cannot move forward and cause the clutch to slip.

The clutch pedal is the control device of the clutch assembly of the manual transmission car, and it is the "human-machine" interaction part of the car and the driver. In learning to drive or in normal driving, it is one of the "five major control parts" of car driving, and the frequency of use is very high, for convenience, people directly call it "clutch". Whether it is operated correctly or not directly affects the starting, shifting and reversing of the car.

How the clutch works

The so-called clutch, as the name suggests, is to use "off" and "close" to transmit the right amount of power. The clutch is composed of friction plates, spring plates, pressure plates and power take-off shafts, which are arranged between the engine and the gearbox, and are used to transmit the torque stored on the engine flywheel to the transmission to ensure that the vehicle transmits the appropriate amount of driving force and torque to the driving wheels under different driving conditions, which belongs to the category of powertrain.

In the case of semi-linkage, the power input end of the clutch and the power output end are allowed to have a speed difference, that is, the appropriate amount of power is transmitted through its speed difference.

The free stroke of the clutch pedal is the result of the clearance between the release bearing and the release lever.

This clearance gradually decreases with the wear of the friction plate of the driven disc, if the clearance is too small or even there is no clearance, the separation bearing will wear out rapidly due to the constant contact with the separation lever, resulting in damage, and the clutch will have a "slip" fault during the bonding period; If the clearance is too large, the clutch will be inseparable, so the free stroke of the clutch pedal should be checked and adjusted regularly.

1. If there is no free stroke separation, the bearing has been damaged.

2. If there is no free stroke, the clutch slips after thermal expansion.

3. The wear and tear of the separation pressure jaw and clutch plate are intensified.

The free stroke of the clutch pedal is the reflection of the gap between the inner end of the clutch diaphragm spring and the release bearing on the pedal.

Between the clutch pedal from the beginning of pedaling to the beginning of acting on the clutch to form a cutting power transmission, there is a part of the clutch pedal in the process of stepping on the clutch pedal that is unloaded and does not do work, and this part is the free stroke of the clutch pedal.

In layman's terms, when you first step on the clutch, it doesn't work if you step on it a little, and when you step down to start having an effect, what doesn't work at this point is the free stroke.

The most vulnerable component of the clutch is the clutch release bearing, in order to prevent or reduce unnecessary damage to the clutch release bearing, so set a clutch free stroke to avoid or reduce the damage of the release bearing.

In the normal driving of the car, the release bearing does not rotate, and only when the clutch is stepped on, the release bearing begins to work and rotate. The gap between the release bearing and the release lever is very small, except that the release lever rotates quickly with the engine, and we know that the car is very bumpy to drive.

In this way, the release bearing can be combined with the release lever at any time to rotate, and this free stroke is set, even if the bump does not make the release bearing combine with the release lever, thus protecting the release bearing.

Free stroke of the clutch pedal: After the driver presses the clutch pedal, he must first eliminate the gap in the clutch master cylinder (the leather bowl of the piston is located between the compensation hole and the oil inlet hole in the installed state, and the piston needs to go through a period of idle stroke before the leather bowl closes the compensation hole) and the gap between the release bearing and the separation finger (the gap does not exist in the normal contact structure, and the gap is about in the very contact structure, before the clutch can be disengaged). In order to eliminate this gap, the pedal clutch stroke required is the free stroke of the clutch pedal, and the free stroke of the clutch pedal = bearing and separation finger clearance x fork lever ratio x hydraulic system amplification factor x pedal lever ratio + master cylinder idle stroke x pedal lever ratio.

It's not the same.

The free stroke of the clutch refers to the clearance between the separated bearing and the diaphragm spring, (here I am talking mainly about the single driven disc diaphragm spring push clutch).

The free stroke of the pedal refers to the distance between the pedal when the pedal is pressed and the distance between the release bearing and the diaphragm spring, and there is a lever ratio of the pedal.

Clutch pedaling:

The mantra of the clutch stepping: the heel should land on the ground, first release quickly, stop for a few seconds, and then slow down, and the upper part of the center of the foot is placed on the pedal; Semi-linkage, not difficult to find, the vehicle is shaking, the engine is ringing, and the soles of the feet are pressed to the point; Lift the clutch, to be flexible, different cars are different; The clutch is high, it can be lifted quickly, and the clutch is low, and it must be lifted slowly; When stepping on the clutch, you need to remember to step on the end every time you shift gears.

The correct way to pedal the clutch is to use the left heel as the fulcrum and use the forefoot to press the clutch pedal. First of all, press the clutch to the end, hang into the corresponding gear, cooperate with a little throttle, and at the same time quickly lift the clutch to the semi-linkage position, and after feeling the clutch is stable, you can completely release the clutch.

Hehe, this concept is a bit vague, generally speaking, the pedal free stroke refers to the starting position to the position where the clutch begins to disengage.

Strictly speaking, the clutch stroke refers to the starting and ending stroke of the clutch fork or clutch ejector rod. , everyday words refer to the first type.

It refers to the gap between the end of the clutch diaphragm spring and the release bearing on the pedal to shout hail reflect. The clutch pedal is between the start of pedaling and the beginning of action, creating a cut power transmission on the permeable clutch. During the process of stepping on the clutch, part of it is unloaded and there is no workmanship.

This is the free travel of the clutch treadmill.

In layman's terms, when you first step on the clutch, it has no effect when you step on it, and then you step down to start to have an effect when the plexus section, which has no effect on the chain is the free stroke.

It is said that the free stroke of the clutch refers to the degree to which the clutch can be pedaled, and this degree generally refers to whether it is positive and tangent when pedaling.

The free stroke of the clutch of the car is too small, the clutch pressure plate is in a semi-detached state, and the clutch is relaxed after the car starts, and the vehicle cannot walk. Even if you can walk, it will accelerate the wear. If the free stroke is too large, the separation is not complete, and it is easy to hit the transmission when entering the gear, and it is not easy to use the gearing.

Adjust what kind of car to divide, first adjust the clutch pressure plate of the three adjustment screw socks.

The free stroke of the clutch branch pedal refers to the reflection of the gap between the inner end of the clutch sensitive diaphragm spring and the disconnecting leased bearing on the pedal. Between the clutch pedal from the beginning of pedaling to the beginning of acting on the clutch to form a cutting power transmission, part of the process of stepping on the clutch pedal is unloaded and no work is done.

The free stroke of the clutch pedal or song is the reflection of the gap between the inner end of the clutch diaphragm spring and the release bearing on the pedal. Between the clutch pedal from the beginning of pedaling to the beginning of acting on the cherry peel to form a cutting power transmission, there is a part of the clutch pedal in the process of no load and no work, which is the free walking shirt of the clutch pedal.

Reflection of the gap between the inner end of the clutch diaphragm spring and the release bearing on the pedal.

The definition of free stroke of the car clutch pedal is the car clutch pedal, and the definition of free travel of the car clutch pedal is.

1) Clutch free clearance: a certain clearance between the inner end of the separation lever and the release bearing in the combined state of the clutch.

2) Clutch pedal free travel stroke: when the clutch pedal is pressed, all the free clearance of the clutch is eliminated, and the required distance is the stroke of the lap-resistant mu collapse pedal.

The distance from the floor to the pedal cushion surface measured with a ruler is called the pedal height, that is, a, and the standard value is, if it does not match, the pedal brake bolt should be adjusted, and the lock nut should be tightened after adjusting to the standard value.

If the clutch pedal does not have a free stroke, it will cause the clutch to slip and the car to run weakly; If the free travel of the clutch pedal is too large, the clutch bypass cannot be completely disengaged, which will cause difficulty in shifting gears. When checking, press the clutch pedal until resistance is felt.

Every time you disassemble and start the clutch hose, clutch hose, clutch master cylinder, or press the clutch pedal and feel soft and weak, you should deflate the clutch hydraulic system and fill the clutch oil, and do not use poor quality clutch oil.

The free travel of the clutch pedal is a reflection of the gap between the inside of the clutch diaphragm spring and the release bearing on the pedal. So what is the free stroke of the clutch pedal?

The clutch pedal is pedaled from the beginning to the beginning of the car clutch, and a part of this process is unloaded, and no work is realized, so this part is the free stroke of the clutch pedal. Generally speaking, when you first step on the clutch of the car, it has no effect when you step on it, and then you start to have an effect when you step down.

The most susceptible to damage in the clutch is the release bearing of the clutch, and in order to prevent the chain or reduce the damage of the car release bearing, such a clutch free stroke is set to avoid damage to the car release bearing.

In the normal driving of the car, it often encounters road bumps, so set up a free stroke to fully protect the car separation bearings and other components to prevent them from being damaged.

Clutch pedal free travel refers to the reflection of the gap between the inner end of the clutch diaphragm spring and the release bearing on the pedal. The following is more information about the free stroke of the clutch pedal: 1. Why is there a free stroke:

The most easily damaged element of the clutch is the release bearing of the clutch, in order to prevent or reduce the damage of the clutch release bearing without necessary, the bridge is bent, so a clutch free stroke is set to avoid or reduce the damage of the release bearing. 2. Popular explanation of free travel: when the owner first stepped on the clutch, it had no effect, only sensitive and boring, and then stepped down to start to have an effect.