Clutch transmission in a car linked directly with the engine components, which is responsible for the transmission of power and cut off and the combined effect, so we can ensure a smooth start when the car started, but also to ensure smooth when shifting, but also to prevent the transmission the overload. And today we have to look at a simple understanding of the clutch works, as well as several common clutch.

Clutch is a transmission mechanism, it has the active part and driven part, the temporary separation of the two parts can also be gradually combined, and in the transmission process may also produce relative rotation, so the clutch between the active parts and the follower will rely on contact friction to transmit torque, or the use of the friction force needed to compress, or use the liquid as a transmission medium, magnetic drive, or use other means to transmit torque.

Now widely used in the car is by spring-loaded friction clutch. The process of moving cars need to keep power transmission, power is only temporarily interrupted by the need for it in the form of process driven part of the long period of active and combined state, when the driver depresses the clutch pedal, through the mechanical transmission , so that the driven part and active part of the separation.

Friction clutch, with the number used in the friction surface, spring form, and installation location, and the manipulation of the different travel agencies, there are a lot different. Divided by the number of driven single-disc and double disc clutch disc clutch. Single-plate clutch which is mainly used in cars and light trucks, while the double-disc clutch transmission torque larger, so is mainly used for medium and heavy trucks. According to Spring-loaded structure is divided into spiral spring clutch and the clutch diaphragm spring.

Each clutch is composed of the following parts:

(1) active components: the flywheel, pressure plate, clutch cover, etc.;
(2) driven parts: the driven plate, output shaft (ie, the first transmission shaft);
(3) pressed parts: compression springs;
(4) control mechanism: separation lever, lever supporting the separation column, swing off, separation sleeve, bearings, clutch pedal.

In the analysis of clutch work process, first have the following common terms:

Free space: clutch engagement, the separation of the bearing surface and the front-end separation gap between the end of the first lever.

Separation gap: clutch, the driven plate and flywheel and front and rear end surface of the gap between the pressure plate.

Clutch pedal free travel: from the clutch pedal to eliminate free space corresponding to the pedal travel is a free trip.

Work the clutch pedal stroke: the elimination of free space, to continue the clutch pedal, there will be separation gap, corresponding to this process is working stroke of the pedal stroke.

Clutch work process can be divided into separate process and bonding process.

During the separation process, the clutch pedal, the clutch free travel free within the first elimination of the gap, and then separated in space to generate the working stroke, clutch.

In the bonding process, and gradually release the clutch pedal, the pressure plate under the action of the compression spring to move forward, first remove the separation gap, and the pressure plate, driven plate and flywheel effect on the work surface sufficient clamping force; after bearings under the action of the spring-back move, resulting in free space, clutch engagement.

Clutch adjustment

In the course of the clutch, the driven plate wear and tear due to thinning of the free space becomes smaller, and ultimately will affect the normal clutch engagement, the clutch needs to be adjusted over time. Clutch adjustment is designed to ensure the right of free space. Clutch adjustment method according to the site and determined the specific model.

The clutch pressure plate is the active component, always with the flywheel, you can usually convex sets, key or pin drive to rotate together with the flywheel, pressure plate and can also move backward relative to the flywheel, so clutch. Driven mainly by the driven plate body plate, friction plate and driven plate hub components.

Isolated from the clutch engagement process, the friction plate and the flywheel and pressure plate friction to occur between, a lot of heat. The need to keep the heat shed in order to avoid friction plate damage due to high temperature, so the clutch cover are equipped with windows, some of the wind system, a guide sheet, in order to strengthen its internal ventilation.

Friction clutch of the most common structure is the helical compression spring and the diaphragm spring, diaphragm spring clutch with push and pull two structural forms. The spiral spring clutch pressure plate under the spring pressure in the week on the way into the central fabric spring and spring.

Clutch control mechanism is divided into mechanical manipulation mechanism, hydraulic control mechanism, the clutch pedal in order to reduce the required power, and not because of the transmission gear ratio is too large to increase the pedal stroke, in some medium and heavy trucks and some cars on the use of a clutch pedal power device. There is also a pneumatic power clutch control mechanism used as the main engine driven air compressor manipulation of energy, the driver's body as a secondary or back-up of the manipulation of energy, and more with the car's air brake system or other pneumatic devices share a compressed air source.

Edit Summary:

If our car is a manual model, it would have to understand what the function of the clutch, known for its role and principles in terms of daily operations will help with the more straightforward words, the clutch is to use to cut and splice the engine power.

For example, we started, the transmission is in neutral, once hung gear, clutch and engine power to drive slowly bonding in order to stop the car suddenly pediment, but also to avoid sudden large drag torque engine suddenly stalled. In the shift in the process, reduce the role of the clutch gear tooth timely sudden impact. In the process of rapid braking, but also to avoid the transmission clutch also bear a larger moment of inertia and overload.