High Quality Transmission Assembly Gearbox Assembly 1621941 for Geely Yuanjing X6

PRODUCT FUNCTIONS APPLICATION ADVANTAGES QUALITY CERTIFICATION

PRODUCT FUNCTIONS

1. Gear Ratio Selection and Torque Conversion

①.Multiple Gear Ratios:

The primary function of the Transmission Assembly 1621941 is to provide a range of gear ratios. It typically consists of a set of gears with different sizes and tooth counts. When the driver selects a gear, the gearbox engages the appropriate combination of gears, changing the ratio between the engine's rotational speed and the speed of the wheels. For example, in lower gears (such as first or second gear), the gear ratio is designed to provide a high torque multiplication. This allows the vehicle to generate a large amount of force at the wheels, making it easier to start from a standstill, climb steep hills, or tow heavy loads. As the vehicle accelerates and the driver shifts to higher gears, the gear ratio is adjusted to reduce the torque multiplication and increase the wheel speed, optimizing the vehicle's speed and fuel efficiency at higher speeds.

②.Torque Conversion:

In addition to providing different gear ratios, the gearbox also plays a crucial role in torque conversion. The engine produces torque at a certain rotational speed, and the gearbox modifies this torque to suit the driving conditions. By using gears with different sizes, the gearbox can either increase or decrease the torque available at the wheels. This torque conversion is essential for the vehicle's performance, as it allows the engine to operate within its most efficient power - output range while still providing the necessary torque to the wheels for various driving scenarios.

2. Power Transmission and Distribution

①.Engine - to - Wheel Power Transfer:

The gearbox serves as the link between the engine and the wheels, transmitting the power generated by the engine to the wheels to propel the vehicle forward. The input shaft of the gearbox is connected to the engine's crankshaft, either directly (in manual transmissions) or through a torque converter (in automatic transmissions). As the engine rotates, the input shaft of the gearbox rotates accordingly. The gears within the gearbox then transfer this rotational motion to the output shaft, which is connected to the vehicle's differential and ultimately to the wheels. This power transmission process is highly efficient, ensuring that a significant portion of the engine's power is effectively delivered to the wheels.

②.Differential Function Integration:

In vehicles with a differential (which is most vehicles), the gearbox works in tandem with the differential to distribute power to the wheels. The differential is responsible for allowing the wheels to rotate at different speeds while cornering, ensuring smooth and stable vehicle handling. The gearbox provides the power to the differential, and the differential then splits this power between the left and right wheels as needed. This coordinated operation between the gearbox and the differential is essential for the vehicle's ability to navigate corners, drive on uneven surfaces, and maintain traction.

3. Neutral and Park Functions

Neutral Function: The gearbox incorporates a neutral position, which disengages all the gears within the gearbox from the engine's power output. When the gearbox is in neutral, the engine can run freely without transmitting power to the wheels. This function is useful in various situations, such as when the vehicle is stationary and the engine needs to be idling, or when the driver needs to coast for a short distance (although this is not recommended in all driving conditions). In addition, the neutral position is often used when starting the engine in some vehicles, as it reduces the load on the starter motor and ensures a smooth start.

Park Function: In automatic transmissions, the gearbox also has a park position. When the gearbox is placed in park, a mechanical locking mechanism engages, preventing the output shaft from rotating. This effectively locks the wheels in place, preventing the vehicle from moving. The park function is used when the vehicle is parked and the driver wants to ensure that the vehicle remains stationary, even on an incline. It is an important safety feature that helps to prevent accidental vehicle movement.

4. Reverse Gear Function

Reverse Gear Engagement: The gearbox is equipped with a reverse gear, which allows the vehicle to move backward. When the driver selects the reverse gear, the gearbox engages a specific set of gears that are designed to reverse the direction of rotation of the output shaft. This causes the wheels to rotate in the opposite direction, propelling the vehicle backward. The reverse gear is typically designed with a lower gear ratio compared to the forward - drive gears, providing the necessary torque to move the vehicle in reverse, especially when starting from a standstill or when backing up a steep driveway.

5. Shift Indicator and Diagnostic Interface

①.Shift Indicator Control:

The gearbox is connected to the vehicle's dashboard to provide the driver with information about the current gear selection. When the driver changes gears, the gearbox sends a signal to the dashboard, which then illuminates the appropriate gear - position indicator light, such as "P" (Park), "R" (Reverse), "N" (Neutral), "D" (Drive), or the specific gear number in a manual or sequential - shift transmission. This visual feedback is essential for the driver to be aware of the gear the vehicle is in, especially in situations where quick gear changes are required or when the driver needs to confirm the gear selection for safety reasons.

②.Diagnostic Interface:

The Transmission Assembly 1621941 is also equipped with a diagnostic interface, which allows mechanics to connect diagnostic tools to the gearbox. Through this interface, the diagnostic tool can communicate with the gearbox's internal control module (if it is an electronically controlled gearbox, such as an automatic or AMT) and retrieve information about the gearbox's operation. This includes data on gear engagement, clutch operation (in manual or AMT systems), and any error codes that may have been generated. The diagnostic interface is crucial for identifying and troubleshooting problems with the gearbox, allowing for prompt repairs and ensuring the continued reliable operation of the vehicle's transmission system.

APPLICATION

ADVANTAGES

1. High Compatibility and Adaptability

The Transmission Assembly Gearbox Assembly 1621941 is engineered with a focus on broad compatibility. It is designed to seamlessly integrate with a wide range of vehicle models within a specific vehicle family or across related platforms. By adhering strictly to industry - standard interfaces, including mechanical mounting dimensions and electrical connection protocols, it can be installed in various vehicle types such as sedans, SUVs, and light commercial vehicles without the need for extensive modifications. This adaptability not only simplifies the replacement process for vehicle owners and mechanics but also ensures that the gearbox can work in harmony with different engine outputs and vehicle chassis configurations, optimizing overall vehicle performance.

2. Exceptional Durability

Robust Construction Materials: The gearbox housing is constructed from high - grade cast iron or advanced steel alloys. Cast iron offers excellent vibration dampening properties, reducing the noise and vibration transmitted through the vehicle's drivetrain. Steel alloys, on the other hand, provide high strength and impact resistance, protecting the internal components from external forces. For example, in harsh off - road driving conditions or heavy - duty commercial use, the sturdy housing can withstand impacts from rocks or debris without cracking or deforming.

Hardened and Wear - Resistant Gears: The gears within the assembly are made from high - quality alloy steels and undergo a rigorous heat - treatment process. This hardens the gear teeth, significantly increasing their wear resistance. As a result, the gears can endure millions of meshing cycles without excessive wear, ensuring a long - lasting and reliable operation. In addition, the use of advanced manufacturing techniques, such as precision machining and surface finishing, reduces friction between the gear teeth, further enhancing their durability.

3. High - Efficiency Power Transmission

Optimized Gear Design: The gear ratios within the Transmission Assembly 1621941 are carefully calculated and optimized to ensure efficient power transfer from the engine to the wheels. The use of helical gears, for instance, provides a smoother and more gradual meshing action compared to straight - cut gears. This results in reduced noise, vibration, and power losses during operation. Helical gears also have a higher contact ratio, allowing them to transmit more torque efficiently. In addition, the gearbox may incorporate advanced features such as overdrive gears, which can reduce engine RPM at high speeds, improving fuel efficiency without sacrificing performance.

Low - Friction Components: The internal components of the gearbox, such as bearings and synchronizers, are designed to minimize friction. High - quality bearings with low - friction seals and lubrication systems are used to reduce the energy required to rotate the shafts. Synchronizers are engineered to engage gears smoothly, reducing the impact on the gears and further improving power transmission efficiency. By reducing friction, more of the engine's power is effectively transferred to the wheels, enhancing the vehicle's acceleration, top speed, and overall fuel economy.

4. Precise and Smooth Shifting

Advanced Synchronization Mechanisms: The gearbox is equipped with state - of - the - art synchronizer systems that ensure smooth and precise gear changes. Synchronizers work by matching the rotational speeds of the gears being engaged, eliminating gear clash and making the shifting process seamless. In modern gearbox designs, multi - cone synchronizers are often used, which can handle higher torque loads and provide more efficient synchronization. These synchronizers are designed to work in harmony with the driver's shifting inputs, whether in a manual transmission or an automated manual transmission (AMT) system, providing a comfortable and responsive driving experience.

Responsive Shift Linkage: The shift linkage system of the Transmission Assembly 1621941 is engineered for precise and easy operation. It is designed to translate the driver's gear - shift movements accurately into gear engagements within the gearbox. The linkage may incorporate features such as short - throw shifters, which reduce the distance the driver needs to move the gear lever to change gears, providing a more sporty and responsive feel. In addition, the shift linkage is designed to be durable and resistant to wear, ensuring consistent shifting performance over the lifespan of the vehicle.

5. High Torque Capacity

Heavy - Duty Gear and Shaft Design: The gearbox is designed to handle high torque loads, making it suitable for vehicles with powerful engines or those used in heavy - duty applications. The gears are larger and more robustly designed compared to those in standard - duty gearboxes, with wider tooth profiles and increased tooth strength. The shafts that transmit power through the gearbox are also made from high - strength materials and are engineered to withstand the torsional forces generated by high - torque engines. This high torque capacity allows the vehicle to accelerate quickly, tow heavy loads, and climb steep gradients without overloading the gearbox.

Reinforced Internal Components: In addition to the gears and shafts, other internal components of the gearbox, such as the clutch (in manual or AMT systems) and the differential, are also reinforced to handle high torque. The clutch is designed with a larger friction surface area and stronger pressure plates to ensure reliable torque transfer between the engine and the gearbox. The differential is engineered to distribute torque evenly to the wheels, even under high - load conditions, ensuring stable and efficient power delivery to the vehicle's drivetrain.

6. IP - Rated Protection and Sealing

Dust and Water Resistance: The gearbox is designed with an IP (Ingress Protection) - rated enclosure, typically with an IP67 or higher rating. This provides a high level of protection against dust and water ingress. The IP67 rating means that the gearbox is completely dust - tight, preventing dust particles from entering and causing abrasion or electrical short - circuits within the internal components. In terms of water resistance, it can be submerged in water up to a depth of 1 meter for 30 minutes without being affected. This level of protection is crucial for vehicles operating in various environments, such as off - road vehicles that may encounter water - filled ditches or muddy terrains, or vehicles in regions with heavy rainfall.

Sealing and Lubrication Systems: To further enhance its protection against the elements, the gearbox is equipped with advanced sealing systems. Seals are used at all potential entry points, such as shaft penetrations and housing joints, to prevent the ingress of dirt, water, and contaminants. In addition, a high - quality lubrication system is in place to ensure that the internal components are properly lubricated. The lubricant not only reduces friction between the moving parts but also helps to dissipate heat generated during operation. The combination of effective sealing and proper lubrication contributes to the long - term reliability and performance of the gearbox.

QUALITY CERTIFICATION