What is the working principle of the drivetrain?

1 Answers
OAvery
07/30/25 10:42am
Here is an introduction to the working principles of each sub-assembly of the drivetrain: 1. Clutch: The clutch is located inside the flywheel housing between the engine and the transmission. The clutch assembly is fixed to the rear plane of the flywheel with screws, and the output shaft of the clutch is the input shaft of the transmission. 2. Transmission: By changing the gear ratio, the transmission alters the torque of the engine crankshaft to meet the varying requirements for driving wheel traction and speed under different driving conditions, such as starting, accelerating, driving, and overcoming various road obstacles. Generally, automotive transmissions include manual transmissions (MT), automatic transmissions (AT), dual-clutch transmissions (DCT), and continuously variable transmissions (CVT). 3. Driveshaft: The driveshaft assembly consists of an outer universal joint (RF joint), an inner universal joint (VL joint), and a splined shaft. Both the RF joint and VL joint are constant velocity ball-type universal joints. The VL joint is connected to the differential driveshaft flange with bolts, while the RF joint connects to the front wheel via the splined shaft at the end of the outer race. The left and right front wheels are each driven by a constant velocity universal joint driveshaft.
Was this review help?
4
2
Share
More Forum Discussions

What Causes the Airbag Warning Light to Illuminate?

When the airbag warning light illuminates, it indicates a malfunction. Possible causes: The illumination of the airbag warning light signifies a fault in the airbag system. Immediate inspection at a repair shop is necessary. Otherwise, during a traffic accident, the airbag may fail to deploy properly. Even without an accident, the airbag might unexpectedly deploy, posing significant safety risks. About automotive airbags: This passive safety protection system works in conjunction with seat belts to provide effective collision protection for occupants. During vehicle collisions, airbags can reduce head injuries by 25% and facial injuries by approximately 80%.
15
2
Share

What Causes a Sudden Increase in Engine Noise?

The reasons for a sudden increase in engine noise are: 1. Loose components: Some parts in the engine compartment, such as the valve cover or intake pipe, may become loose and collide with the compartment during driving, producing noise; 2. Oil issues: When new oil is replaced, the engine may not adapt to the oil's viscosity, potentially causing higher RPMs; 3. Carbon buildup: Over time, a significant amount of carbon deposits can accumulate, adhering to the friction components inside the engine and increasing friction. An engine is a machine that converts other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc.
2
5
Share

How to Drive a Manual Transmission Car?

To drive a manual transmission car: 1. When starting, press the clutch pedal all the way down with your left foot and shift into first gear. Place your right foot lightly over the accelerator pedal. Slowly release the clutch while simultaneously releasing the handbrake and gently pressing the accelerator. As you press the accelerator, gradually lift your left foot off the clutch pedal to achieve a smooth start. 2. When starting on a steep hill, lift the clutch pedal with your left foot to the appropriate position, where the vehicle is in a semi-engaged state, then quickly press the accelerator while slowly releasing the clutch and handbrake to start the vehicle. When driving in rain or snow, it's important not only to reduce speed but also to make judgments in advance, especially when approaching intersections. Always slow down early to avoid being unable to stop in time. Remember to use intermittent braking to prevent the vehicle from skidding.
16
3
Share

How to Unlock a Stuck P Gear?

Methods to unlock a stuck P gear include: 1. Release the brake pedal and then press it down again, then attempt to shift gears; 2. If that doesn't work, try slightly turning the steering wheel before shifting gears; 3. Restart the engine, press the brake pedal again, and then shift gears; 4. Open the hood, disconnect the battery, restart the engine, press the brake pedal again, and then shift gears. These methods can generally resolve a stuck P gear. If the P gear remains stuck and cannot be shifted, it is likely due to a damaged gear limit switch, brake light switch, or brake light fuse. In such cases, it is necessary to contact a 4S dealership for repairs.
4
2
Share

How to Deal with Low Tire Pressure?

Low tire pressure can be handled by: 1. Visually checking if the tire can still continue to drive; if it can, drive to the nearest tire repair shop for service; 2. If the tire pressure is too low to drive, use an onboard air pump to inflate it, then go to the nearest repair shop for inspection; 3. Replace with a spare tire and proceed to repair; 4. Low tire pressure due to cold temperatures is normal and will return to normal after the car has been running for a while; 5. Reinstall the tire edge with the wheel rim. Tire pressure refers to the air pressure inside the tire, which is the blood pressure of the car. The level of tire pressure plays a crucial role in the performance and power of the car.
10
5
Share

Can a Manual Transmission Be Converted to an Automatic Transmission?

Manual transmissions cannot be converted to automatic transmissions, primarily due to differences in vehicle operating mechanisms: 1. Manual transmissions have a clutch, while automatic transmissions do not; 2. The principles and structures of the transmissions are different; 3. The design of a car is a matched system, and altering its internal structure can compromise safety. The state prohibits unauthorized modifications to a vehicle's internal structure, as improper operations can introduce safety hazards. Converting a manual transmission to an automatic one may constitute illegal modification, as illegal modifications include alterations to a vehicle's appearance, power system, transmission system, and braking system that exceed the original design load capacity and functions permitted by national laws and manufacturer agreements. Whether replacing the transmission with an automatic one or installing an automatic clutch, both modifications involve changes to the vehicle's power and transmission systems and are considered illegal without approval from relevant authorities.
8
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.