Woodward 9905-866 is a precision-engineered direct-acting fuel control solenoid, tailored for reliable fuel flow regulation in internal combustion engines, standby generators,

 and small-to-medium industrial power units. Operating on a 12V DC power supply, it features a "normally open" (NO) configuration—allowing fuel to flow freely when de-energized, and shutting off fuel supply immediately upon receiving an electrical signal. 

This fail-safe design is critical for emergency shutdown scenarios (e.g., engine overspeed, system faults) to prevent fuel waste or equipment damage.

Constructed with Woodward’s proprietary industrial materials, the 9905-866 integrates a high-conductivity copper coil (for fast response), a wear-resistant stainless steel valve core, and oil-resistant nitrile seals. 

These components enable the solenoid to withstand the harsh conditions of fuel systems—including exposure to diesel/gasoline, high engine temperatures (-30°C to 120°C typical), and continuous vibration—

while maintaining leak-proof performance and a long service life (up to 10,000+ actuation cycles under normal operation).

As a key component in Woodward’s fuel management ecosystem, it is commonly paired with Woodward engine governors, fuel injection systems, and generator control units to achieve precise fuel metering and on-demand shutoff.

 Core specifications include: 12V DC rated voltage, normally open (NO) operation, direct-acting actuation (no pilot pressure needed), compact footprint for tight engine bay installations, 

and compliance with industry standards (e.g., SAE J2716 for automotive fuel system components, ISO 80601 for electrical safety in power generation equipment).

伍德沃德（Woodward）9905-866 是一款精密设计的直动式燃油控制电磁阀，专为内燃机、备用发电机组及中小型工业动力设备中的可靠燃油流量调节场景打造。

该产品采用 12 伏直流（12V DC）供电，配置为 “常开型”（NO）—— 断电时保持燃油通路畅通，接收到电信号后立即切断燃油供应。这种故障安全设计在紧急停机场景（如发动机超速、系统故障）中至关重要，可有效避免燃油浪费或设备损坏。

产品采用伍德沃德专利工业材质制造，集成高导电铜线圈（实现快速响应）、耐磨不锈钢阀芯及耐油丁腈密封件，能抵御燃油系统的恶劣工况 —— 

包括接触柴油 / 汽油介质、发动机高温环境（常规适用温度 - 30°C 至 120°C）及持续振动，同时保持无泄漏性能与较长使用寿命（正常工况下可实现 10,000 次以上动作循环）。

作为伍德沃德燃油管理系统生态的关键部件，其常与伍德沃德发动机调速器、燃油喷射系统及发电机控制单元配套使用，实现精准燃油计量与按需切断控制。核心技术参数包括：

额定电压 12 伏直流、常开（NO）工作模式、直动式驱动（无需先导压力）、紧凑尺寸适配狭窄发动机舱安装，且符合行业标准（如汽车燃油系统部件相关的 SAE J2716 标准、发电设备电气安全相关的 ISO 80601 标准）。