1006300GH030
Brand: JAC
Model: T8
Product Name：OCV Valve
Part Number: 1006300GH030
Product Details
1. Basic Overview & Core Functional Positioning
The 1006300GH030 OCV Valve, fully defined as the Oil Control Valve, is a genuine OEM factory precision component exclusively developed and matched for JAC T8 pickup truck series. Serving as the core control unit of the engine Variable Valve Timing (VVT) system, this valve acts as the hydraulic control switch between the engine lubrication system and VVT phaser assembly. Installed on the cylinder head of the JAC T8 gasoline engine, it precisely controls the direction, pressure, and flow rate of high-pressure engine oil delivered to the intake and exhaust VVT phasers. As a key bridge connecting mechanical timing components and the vehicle’s electronic control system, the OCV valve receives real-time adjustment signals from the Engine Control Unit (ECU) to adapt valve timing parameters under diverse driving conditions, including cold start, idle operation, low-speed cruising, high-load climbing, and high-speed cruising.
Different from conventional fixed oil passage valves, the 1006300GH030 OCV Valve features dynamic proportional oil pressure regulation capability. It solves the inherent defects of traditional fixed valve timing engines, such as insufficient low-speed torque, poor high-speed power release, and unstable idle combustion. During idle and low-speed operation, the valve precisely distributes engine oil pressure to delay valve timing, stabilize engine idle speed, reduce jitter, and lower fuel consumption. During acceleration and heavy-load driving, it quickly switches the oil circuit to advance valve timing, accelerate intake and exhaust circulation, improve combustion efficiency, and enhance the power output performance of the JAC T8 pickup. Meanwhile, accurate VVT adjustment optimizes air-fuel ratio matching, reduces incomplete combustion waste, and effectively decreases exhaust emissions, enabling the JAC T8 engine to meet national and international lightweight commercial vehicle emission standards.
The part number 1006300GH030 is a dedicated exclusive model code for JAC T8, which cannot be interchanged with OCV valves of other JAC models such as Refine series or other pickup variants. Produced in strict accordance with JAC’s original factory design standards, ISO 9001 and IATF 16949 automotive quality management systems, every dimensional parameter, solenoid response threshold, and oil passage flow specification is specially calibrated for the JAC T8’s 2.0L powertrain. Compared with inferior aftermarket OCV valves that suffer from delayed response, inaccurate oil pressure control, and easy carbon deposition blockage, the genuine 1006300GH030 valve maintains long-term stable control accuracy, effectively avoiding common engine faults such as fault code lighting, power attenuation, and idle instability caused by mismatched valve control parameters.
2. Material Selection & Manufacturing Standards
The 1006300GH030 OCV Valve is manufactured with high-standard automotive-grade precision materials to adapt to the extreme working environment inside the engine cylinder head, including long-term high temperature up to 150°C, high oil pressure impact, frequent electromagnetic switching, and complex oil contamination erosion. The valve body shell adopts high-strength forged aluminum alloy material, which features lightweight characteristics, excellent thermal conductivity, and structural rigidity. It effectively resists thermal deformation caused by long-term engine high-temperature operation and avoids valve body jamming or oil leakage problems due to structural deformation. The internal valve core and slide valve are made of high-hardness stainless steel alloy with ultra-precision grinding treatment, achieving ultra-low friction coefficient and outstanding wear resistance to ensure frequent reciprocating switching without abrasion or failure.
The internal electromagnetic coil adopts high-temperature resistant enameled copper wire with 180°C ultra-high temperature resistance grade, which can maintain stable electromagnetic induction efficiency under continuous high-temperature working conditions without aging, demagnetization or short circuit failure. The sealing components use imported fluororubber composite gaskets, which possess excellent oil resistance, corrosion resistance and aging resistance. These sealing accessories effectively prevent high-pressure engine oil leakage and external dust from entering the valve body, ensuring the tightness and stability of the internal oil circuit. The filter screen installed at the oil inlet end is made of high-density stainless steel woven mesh, which can effectively filter tiny impurities, carbon deposits and metal debris in the engine oil to prevent fine particle blockage of the precision oil passage and valve core clearance.
All production processes of the 1006300GH030 OCV Valve adopt fully automated precision assembly and strict multi-channel quality inspection procedures. Finished products undergo professional tests including electromagnetic response sensitivity testing, full-range oil pressure regulation testing, high and low temperature cycle aging testing, tightness testing, and long-cycle fatigue switching testing. Each batch of products passes salt spray corrosion resistance verification and engine bench simulation operation testing to ensure stable response speed and accurate oil pressure control within the full engine speed range. The genuine OCV valve achieves a service life of more than 120,000 kilometers under normal vehicle maintenance conditions, which is far superior to ordinary aftermarket replacement parts in durability and working stability.
3. Structural Composition & Working Principle
The 1006300GH030 OCV Valve adopts a mature and reliable integrated electromagnetic hydraulic control structure, mainly composed of four core components: electromagnetic coil assembly, precision slide valve core, dual-direction oil passage shell, and high-density filter screen sealing assembly. The overall structure is compact and highly integrated, perfectly matching the installation space and oil circuit layout of the JAC T8 engine cylinder head. The oil inlet end is connected to the main engine oil passage, while the two oil outlet ends correspond to the advance and delay oil cavities of the VVT phaser respectively, forming a complete closed-loop hydraulic control system together with the phaser and engine ECU.
The working principle relies on ECU pulse width modulation (PWM) signal control. After the vehicle engine is started, the ECU collects real-time operating data including engine speed, throttle opening, coolant temperature, and load condition, and outputs accurate PWM signals to control the on-off frequency and suction of the OCV valve electromagnetic coil. When the coil is energized, electromagnetic force drives the internal slide valve to displace, switching the oil passage direction and adjusting the oil pressure entering the VVT phaser. By changing the oil pressure ratio of the advance cavity and delay cavity, the valve precisely controls the rotation angle of the phaser, thereby realizing dynamic adjustment of intake and exhaust valve timing.
Under idle and cold start conditions, the OCV valve keeps the phaser in the locking and delay state to ensure stable engine operation and reduce cold start vibration and noise. Under acceleration and high-load working conditions, the valve rapidly switches the oil circuit to advance valve timing, optimize intake and exhaust efficiency, and release engine power performance. The built-in reset spring ensures that the slide valve can quickly reset and lock the oil passage when the engine is shut down, preventing VVT system disorder and timing deviation during the next start. The optimized internal flow channel design effectively reduces oil pressure loss and response delay, making the VVT system adjustment of JAC T8 engine more sensitive and linear.
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