Browse
For Sale
Antiques CollectiblesApparelBaby Kids ItemsBooks， Movies And MusicElectronicsFree StuffGarden OutdoorHealth BeautyHome GoodsHome Improvement SuppliesMusical InstrumentsOffice SuppliesPet SuppliesSporting GoodsTicketToys GamesTransportationOthers
Jobs
AccountingAdministration & Office SupportAdvertising， Arts & MediaBanking & Financial ServicesCall Center & Customer ServiceCEO & General ManagementCommunity Services & DevelopmentConstructionConsulting & StrategyDesign & ArchitectureEducation & TrainingEngineeringFarming， Animals & ConservationGovernment & DefenseHealthcare & MedicalHospitality & TourismHuman Resources & RecruitmentInformation & Communication TechnologyInsuranceLegalManufacturing， Transport & LogisticsMarketing & CommunicationsMining， Resources & EnergyReal Estate & PropertyRetail & Consumer ProductsSalesScience & TechnologySelf EmploymentSport & RecreationTrades & ServicesOther
Property
BuyRent
Cars
Used CarsNew CarsOthers
Services
BusinessCraftsDesign And WebEventsHome ImprovementLegalLessonsPersonalPetsPhotographyRepair And Technical SupportWellnessWriting， Translation， And TranscriptionOthers
Community
Activities & GroupsArtists & MusiciansClasses & LessonsEventsFriendship & NetworkingLost & FoundRideshareSports TeamsVolunteersTravel & Travel PartnersSkills & Language SwapOther

What is the main function of the clutch?

1 Answers
CassidyFitz
07/29/25 8:48pm
The working principle of the clutch is to press or release the clutch pedal as needed, temporarily separating and gradually engaging the engine and the transmission to cut off or transmit the power input from the engine to the transmission. The clutch is an important component of the vehicle's powertrain, responsible for disconnecting and connecting the power between the engine and the transmission. The working states of the clutch are as follows: 1. Disengaged when the clutch pedal is pressed, fully engaged when the clutch pedal is not pressed, and partially engaged (semi-engaged) when the clutch pedal is partially pressed. When starting the vehicle, the driver presses the clutch pedal, and the movement of the clutch pedal pulls the pressure plate backward, separating the pressure plate from the friction disc. At this point, the pressure plate and the flywheel are not in contact, and there is no relative friction. 2. When the vehicle is in normal operation, the pressure plate is tightly pressed against the friction disc of the flywheel. At this time, the friction between the pressure plate and the friction disc is at its maximum, maintaining relative static friction between the input shaft and the output shaft, with both rotating at the same speed. 3. The last state is the semi-engaged state of the clutch, where the friction between the pressure plate and the friction disc is less than in the fully engaged state. In this state, the pressure plate and the friction disc on the flywheel are in a sliding friction state, with the flywheel rotating faster than the output shaft, and part of the power from the flywheel is transmitted to the transmission. This state is equivalent to a soft connection between the engine and the drive wheels.
Was this review help?
14
0
Share
More Forum Discussions

What Causes the Noise When Stepping on the Brake and Turning the Steering Wheel in Place?

The noise is mainly caused by the friction between the tires and the ground, as well as noises from the brake discs, steering system, and suspension system. When turning the steering wheel in place, the steering wheels do not rotate around their geometric centers but rather roll slightly because the rotation center of the tire is not at its geometric center but at the rotation center of the steering knuckle. Therefore, from a microscopic perspective, the wheels perform a circular roll centered on the steering knuckle axis when turning in place. Noise occurs when turning the steering wheel in place: This phenomenon is more common in vehicles with mechanical hydraulic power steering (HPS), which is a mature and cost-effective technology. Mechanical hydraulic power steering converts part of the engine's power into hydraulic pump pressure, which then applies force to the steering system to turn the tires. When the steering wheel is kept straight, the pressure on both sides of the piston is equal. Once the steering wheel is turned, the mechanical control valve connected to the steering column opens. Tire squealing noise due to friction: When stepping on the brake and turning the steering wheel in place, the friction between the wheels and the ground produces a squealing noise. The increased force on the steering system can cause vibrations, resulting in a clunking sound. Although the suspension system is also under stress, it usually does not produce noise unless there are pre-existing issues, which might lead to cracking or creaking sounds. Of course, it's not entirely forbidden to step on the brake and turn the steering wheel in place, as there are situations, such as making tight turns in narrow spaces, where it is necessary. Therefore, it's not something to completely avoid—just minimize it when possible. If you must step on the brake and turn in place, avoid pressing it too hard; a light touch to restrict vehicle movement is sufficient.
20
1
Share

Can New Cars Have Paint Runs?

Generally, new cars should not exhibit paint runs. This phenomenon typically occurs only after repairs when the affected area has undergone bodywork and repainting, and the issue was not noticed during delivery or when the car's paint was not fully dried. Carefully inspect the vehicle when selecting: When choosing a car, pay attention to the details of the vehicle. The paint surface is the most basic inspection item. If there are burrs, runs, or color discrepancies, the next steps involve checking the engine compartment and assemblies. If there are obvious irregular welds, signs of removed or damaged rust-proof paint on screws and nuts, or color differences in the engine compartment, these cars are likely to be transport-repaired vehicles. Identifying whether a new car has been repainted: Examine the edges and seals. Look closely at the body's edge joints, seals, trim pieces, and rubber strips for any residual paint marks. If the car has been repainted, these areas will inevitably show traces. Pay special attention to the paint on the engine hood. If you notice that the paint's fullness is inferior to the original, or if there are signs of orange peel, runs, pinholes, bubbles, cracks, discoloration, or putty marks on the surface.
1
1
Share

Is there a fee for renewing a driver's license?

Renewing a driver's license requires payment. Driver's License: A driver's license, officially known as a motor vehicle driving license or simply "license," is a legal document required for individuals to operate motor vehicles. Driving a motor vehicle necessitates certain driving skills, and those lacking such skills may cause traffic accidents if they drive recklessly. Generally, individuals cannot drive on public roads without a license. License as a Permit: For those who have acquired safe driving skills, the document that permits them to drive vehicles on the road is the "driver's license." This indicates that a driver's license is a form of "permit." The authorization to drive a vehicle is granted through the issuance of a driver's license.
9
5
Share

Can the bottom of the engine be jacked up with a jack?

The bottom of the engine cannot be jacked up with a jack, as it may damage the engine. Proper jacking points: Every vehicle has designated jacking points specifically designed for using a jack. Most cars have these points located along the edges of the chassis near the wheels. Typically, there is a protruding edge along the vehicle's underbody with several reinforced areas marked for jack placement. Precautions when using a jack: When using a jack to lift the vehicle, always choose a firm and level surface, and ensure the parking brake is fully engaged. The jack's lifting point must be positioned precisely at the chassis support points. Failing to do so may result in unstable vehicle positioning, potential damage to the jack, or even harm to the vehicle's chassis.
14
1
Share

Can a Motorcycle Be Transferred After the Nameplate Falls Off?

A motorcycle cannot be transferred after its nameplate falls off. The solution is to have the dealer contact the manufacturer to reissue the certificate of conformity before the motorcycle can be registered. Obtaining the Application Form: Both parties involved in the motorcycle transfer need to go to the vehicle management office to collect the "Motor Vehicle Inspection Record Form" and the "Motor Vehicle Registration, Transfer, Cancellation/Import Application Form"; Motorcycle Inspection: Drive the motorcycle to the vehicle inspection area of the vehicle management office for external inspection, tracing the number, removing the license plate, and taking photos. Collect the vehicle photo and attach it to the "Motor Vehicle Inspection Record Form," then proceed to the transfer hall to complete the entry procedures; Information Update: At the designated counter, a new vehicle license will be printed according to the serial number, and the old vehicle license and changes to the motor vehicle registration certificate information will be collected.
5
0
Share

Why Can't the Small Gasoline Engine Shut Off?

Small gasoline engine can't shut off because the air piston spring has been compressed for a long time, resulting in shortened length and weakened elasticity. Introduction to small gasoline engines: Refers to reciprocating piston gasoline engines with a wide range of uses other than for vehicles and aviation, with a power of less than 20kW. Most of them are highly versatile and specialized, so they are also called small gasoline engines. General gasoline engines with more than 20kW are mostly modified products of vehicle gasoline engines. Structurally, they can be divided into two-stroke and four-stroke. The power of existing small gasoline engines in China is 0.63-24.00kW; Characteristics of small gasoline engines: The characteristics are small size and light weight, easy to use and operate, and low price. They are mainly used for agricultural and forestry plant protection machinery, garden machinery, small tools, generator sets, construction machinery, fire-fighting series tools, recreational go-karts, water power and aviation model power, etc.
6
4
Share
Trending Ranking
What Brand is Voyah?
Where is the motorcycle air filter located?
Will I Get Penalized for Driving with Daytime Running Lights at Night?
4
Why Doesn't the Manual Transmission Gear Shift Feel Smooth?
5
What Does It Mean When the Engine Warning Light Comes On?
6
Why does the engine fault light come on after a jump start?
7
What Are the Must-Have Items for Motorcycles?
8
What Causes High-Speed Shimmy in Small Cars?
9
What is the appropriate tire pressure for family sedans on highways?
10
What is the lifespan of a plug-in hybrid vehicle's battery?
More Forum Discussions

Is the Engine Not Working Due to the Computer Board?

7
1
1

How many kilometers should a motorcycle's belt be replaced?

13
3
1

At What Battery Level Should a New Electric Vehicle Be Charged?

6
4
1

Can Small Flatbed Trucks Drive on Highways?

5
4
1
About Us
Terms of Use
Privacy Policy
Help
Contact Us
FAQ
Cookie
Cookie Policy
Cookie Settings
© 2025 Servanan International Pte. Ltd.