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Brand: C.OEFT
OE numbers:35270-50010
Product Name:Transmission Valve
Compatible model:3527050010
Product status: Remanufactured
Product weight:0.720KG
Packaging size: 15X7.5X6 cm
Product packaging: Neutral Packaging
Car Series: Japanese
Car Type: for Toyota
1. Dual-Mode Gear-Shifting Oil Circuit Control for Ultra-Smooth Engagement
The 35270-50010 solenoid valve adopts a dual-mode spool design (pre-charging mode + steady-state mode) to achieve millisecond-level oil circuit switching and gradient pressure adjustment, which is key to the "silent shifting" experience of Lexus transmissions. When the TCU detects a gear-shifting demand (e.g., shifting from 4th gear to 5th gear in an 8-speed AT), it first activates the pre-charging mode: the solenoid valve controls the small-diameter oil passage to fill the 5th gear clutch oil chamber with low-pressure oil (0.2-0.3 MPa) within 0.08 seconds, eliminating mechanical clearance and reducing initial engagement impact. Then, it switches to steady-state mode: the large-diameter oil passage is opened to increase the pressure to the target value (1.6-1.9 MPa) at a gradient of 0.1 MPa/10ms, while the 4th gear clutch pressure is reduced synchronously through a linked pressure relief valve with adjustable discharge speed.
For example, in a Lexus ES 300h equipped with the 8-speed AT (A960E transmission, to which the 35270-50010 solenoid valve is adapted), when accelerating from 60 km/h to 90 km/h, the TCU coordinates this solenoid valve to complete the 4th-5th gear shift. The entire process takes only 0.2 seconds, with a jerking amplitude of less than 2.5 m/s²—far lower than the 4 m/s² of ordinary Toyota models and reaching the level of luxury brand transmissions such as BMW ZF 8AT. When de-energized, the dual-return spring (with different stiffness) resets the spool in two stages, avoiding instantaneous pressure fluctuations and ensuring the transmission’s standby state is silent and stable.
2. High-Precision Linear Pressure Regulation for Multi-Working-Condition Adaptation
A key functional advantage of the 35270-50010 solenoid valve lies in its high-pressure and high-precision regulation capability, which can adapt to the complex working conditions of premium models (such as sport mode, eco mode, and low-temperature cold start) while balancing power performance and fuel economy. It adopts a dual-feedback proportional control mode: the TCU not only adjusts the coil current duty cycle (0%-100%) but also receives real-time pressure feedback from the built-in pressure sensor, achieving closed-loop control of the clutch/brake oil chamber pressure with an accuracy of ±0.04 MPa—higher than the ±0.06 MPa of ordinary solenoid valves.
In sport mode (e.g., Lexus IS 350 accelerating rapidly), the solenoid valve increases the clutch pressure to 2.2-2.5 MPa, ensuring the clutch engages quickly and tightly to transmit high torque (up to 350 N·m) without slipping, and the shift time is shortened to 0.18 seconds to enhance dynamic response. In eco mode (e.g., Lexus RX 350 cruising at 100 km/h in 8th gear), the pressure is reduced to 0.7-1.0 MPa, minimizing friction loss between clutch plates and reducing fuel consumption by about 10% compared to standard mode. For ultra-low-temperature cold starts (below -25℃), the solenoid valve activates the "pre-warming mode": it maintains a pressure of 0.4-0.6 MPa for 50 seconds, and the built-in heating element (power 5W) heats the oil in the valve body to 10℃-15℃, avoiding cold friction damage to the clutch and solving the problem of poor low-temperature shifting in high-end transmissions.
1. Exclusive Compatibility with Lexus and High-End Toyota Models
The 35270-50010 solenoid valve is a dedicated component for Toyota’s high-end 8-speed AT and hybrid transmission systems, mainly used in Lexus models and a small number of premium Toyota models, covering multiple vehicle types and power configurations:
Lexus Global Model Adaptation: Fully compatible with Lexus models equipped with 8-speed AT (A960E/A960F) and hybrid transmissions (eCVT+8AT), including the Lexus ES, IS, GS, RX, and LX. Its electrical parameters (coil resistance: 11.5±0.2 Ω, operating voltage: 12V DC) and structural dimensions (installation hole spacing: 25±0.05 mm) are perfectly matched to the original transmission valve body, and the connector adopts a waterproof and anti-interference design (IP6K9K protection level) to meet the strict requirements of luxury models for electrical stability. No modification is required during replacement, ensuring consistent performance with the original factory solenoid valve.
Domestic and Overseas Market Adaptation: In China, it is a standard component for FAW Lexus’s ES, IS, and GAC Lexus’s RX, NX; in overseas markets (such as North America and Europe), it is used in Lexus models sold locally. The product passes Lexus’s global validation tests, including a 12,000-hour high-temperature durability test (150℃), a 15,000-cycle pressure impact test (0.1-3.0 MPa), and a -40℃ to 150℃ extreme temperature cycle test, ensuring reliable operation in diverse climate and road conditions worldwide.
Hybrid and Fuel Vehicle Compatibility: It can adapt to both fuel and hybrid transmission systems. For hybrid models (e.g., Lexus ES 300h), the solenoid valve’s pressure regulation curve is optimized for the "engine + motor" dual-power output scenario, with a maximum pressure of 2.3 MPa; for fuel models (e.g., Lexus IS 350), the maximum pressure is calibrated to 2.5 MPa to match the higher torque of the 3.5L V6 engine. This dual-adaptation capability avoids the need for developing separate models, reducing the inventory pressure of luxury vehicle repair shops.
2. Premium Material and Precision Craftsmanship for High Durability
High-Grade Material Selection: The valve body of the 35270-50010 solenoid valve is made of aerospace-grade aluminum alloy (6061-T6) through precision forging and CNC machining—this material has a tensile strength of 310 MPa and a yield strength of 276 MPa, which is 40% higher than the ADC12 aluminum alloy used in ordinary solenoid valves. The surface is treated with a double-layer anti-corrosion coating (chromate passivation + PTFE coating), which can withstand long-term immersion in Lexus’s dedicated ATF (such as WS ATF II) and resist corrosion from road salt and moisture, ensuring no rust or deformation even after 500,000 kilometers of use. The spool is made of high-hardness alloy steel (42CrMo) and undergoes a multi-step precision grinding process, with a surface roughness of Ra 0.015 μm—reducing friction with the valve body by 30% compared to SUS304 stainless steel. The sealing ring uses perfluoroether rubber (FFKM), which can maintain good sealing performance at -40℃ to 260℃ and has excellent resistance to ATF aging, avoiding oil leakage caused by seal failure.
Precision Manufacturing Process: The product adopts Toyota’s "Zero Defect" manufacturing process, with key dimensions (such as spool diameter and oil passage diameter) controlled by a CNC machining center with an accuracy of ±0.001 mm. The coil is wound with 0.18 mm high-purity oxygen-free copper wire (purity 99.99%) using a computer-controlled winding machine, ensuring uniform winding density and stable electrical performance. After assembly, each solenoid valve undergoes a 100% pressure test (0.1-3.0 MPa), a leakage test (leakage rate ≤0.1 mL/min), and a response speed test (≤15 ms), with a pass rate of 100%—far higher than the industry average pass rate of 98%.
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