Classification of Automotive Clutch Types

(I) Classification by Structural Form

Diaphragm Spring Clutch

Features: Utilizes a diaphragm spring as the pressure element, featuring a compact structure, small axial dimension, and easy operation.

Application Scenarios: Mainstream passenger cars (e.g., Volkswagen Lavida, Toyota Corolla), accounting for over 80% of the passenger car clutch market.

Representative Product: Valeo LUK series diaphragm spring clutches, which possess wear-resistant and high-temperature-resistant properties, with a service life of up to 150,000 kilometers.

Coil Spring Clutch

Features: Relies on coil springs to provide clamping force, offering low cost and convenient maintenance.

Application Scenarios: Commercial vehicles (trucks, buses) and old passenger cars, accounting for approximately 60% of the commercial vehicle market.

Representative Product: Coil spring clutches matched with Sinotruk (China National Heavy Duty Truck Group), capable of withstanding large torques and suitable for 15-25 ton-class trucks.

(II) Classification by Actuation Method

Mechanically Operated Clutch

Transmission Method: Transmits operating force through pull rods and cables.

Advantages: Simple structure, high reliability, and low maintenance cost.

Disadvantages: Large operating force, not suitable for large-displacement vehicle models.

Applicable Models: Mini-cars (e.g., Wuling Hongguang MINI) and low-end commercial vehicles.

Hydraulically Operated Clutch

Transmission Method: Uses hydraulic oil as the medium to transmit operating force.

Advantages: Easy operation, high transmission efficiency, and flexible arrangement.

Applicable Models: Mid-to-high-end passenger cars (e.g., Honda Accord, BMW 3 Series) and medium-to-heavy commercial vehicles. Currently, it accounts for over 90% of the passenger car clutch market.

(III) Classification by Number of Driven Plates

Single-Plate Clutch

Structure: Equipped with 1 driven plate, featuring a simple structure and good heat dissipation.

Application Scenarios: Most passenger cars (displacement ≤ 2.0L), such as Nissan Sylphy and Buick Excelle.

Dual-Plate Clutch

Structure: Equipped with 2 driven plates, enabling large torque transmission and smooth starting.

Application Scenarios: Large-displacement passenger cars (displacement ＞ 2.0L) and heavy-duty commercial vehicles, such as Audi A6L (3.0T model) and Dongfeng Tianlong heavy-duty trucks.