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Brand: C.OEFT
OE numbers: U660E U660
Product Name: Transmission Valve Body Assembly
Compatible model:
Product status: Remanufactured
Product weight: 6.296KG
Packaging size: 63X41X36cm
Product packaging: Neutral Packaging
Car Series: for Toyota
Car Type: Japanese
1.Fluid Pressure Regulation
·It uses a network of valves, springs, and passages to control the hydraulic pressure of transmission fluid. This pressure is essential for engaging or disengaging clutches, bands, and other internal components that facilitate gear changes.
2.Gear Shift Control
·By directing fluid to specific clutches or bands based on inputs (e.g., driver throttle, vehicle speed, and engine load), the valve body determines when and how the transmission shifts between gears (e.g., from 1st to 2nd, or into reverse).
3.Modulating Shift Smoothness
·It adjusts pressure and fluid flow rates to ensure transitions between gears are smooth, reducing jerking or harshness that could damage components or discomfort passengers.
4.Adapting to Driving Conditions
·In modern transmissions, electronic control modules (ECMs) work with the valve body to optimize shifts for different scenarios, such as sport mode (faster shifts) or eco mode (fuel-efficient shifts).
5.Preventing Overpressure
·Safety valves within the body limit maximum pressure, protecting the transmission from damage caused by excessive hydraulic force.
The transmission valve body assembly is a critical component in automatic transmissions, responsible for regulating hydraulic pressure and directing fluid flow to control gear shifts. Its advantages include:
1. Precision Control and Efficient Transmission
① High-Precision Hydraulic Regulation
·Adopts precision-machined valve cores and oil passage designs, with error controlled at the micrometer level, ensuring accurate hydraulic oil flow paths and achieving millisecond-level shift response and smooth power connection.
·Linear solenoid valves enable stepless oil pressure adjustment, reducing shift impact by more than 40%.
② Intelligent Shift Logic
·The valve body integrated with ECU can dynamically adjust the transmission ratio according to vehicle speed and load, optimizing fuel economy and reducing emissions.
2. Material and Durability Advantages
① Application of High-Strength Materials
·Aviation-grade aluminum alloy or hard anodizing process resists high temperatures (120°C) and corrosion, with a service life of up to 150,000-200,000 kilometers.
·Compared with traditional plastic valve bodies, the wear rate of metal materials is reduced by more than 60%.
② Adaptability to Extreme Environments
The modular design supports operation in a wide temperature range from -40°C to 120°C, and the oil self-cleaning system can reduce oil sludge accumulation.
3.Integration and Maintenance Convenience
① Space and Performance Optimization
·The highly integrated design saves engine compartment space while shielding electromagnetic interference.
·The labyrinth-type oil passage layout enables precise control under multiple working conditions and improves transmission efficiency.
② Enhanced Maintainability
·Modular components support separate replacement (such as solenoid valves and sealing rings), reducing maintenance costs by 40%.
·The bolted connection structure is easy to disassemble, shortening maintenance
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