![]() ![]() The injection process occurs extremely fast and because the actuator can be activated and deactivated so quickly, piezo injectors are known for their superior reliability, increased durability, efficiency and reduced emissions. When the Piezo actuator is de-energized, the valve closes and high pressure fuel forces the needle to return to the closed position. The tester is easy to use, lightweight and portable, making it suitable for both. Connect the 20/60 A current clamp (TA189) to Channel A on PicoScope and link the clamp around the signal wire of the number 1 injector. With no pressure at the top of the needle, it springs open, allowing fuel to be injected into the combustion chamber. The device has the capability of testing both solenoid and piezo injectors. ![]() When the Piezo crystal is energized, a valve at the top of the needle opens, allowing the pressurized fuel at the top of the needle to return to the tank through the return line. Piezo electric fuel injector process diagram (via Diesel Hub) Pressurized fuel is also delivered to the top of this needle, the force of which keeps the needle closed. High pressure fuel is delivered to the tip of the injector where a needle rests and blocks fuel from being injected. A piezo injector can act up to five times faster than a standard injector solenoid and the motion is frictionless, which allows for precise fuel measurement and multiple injector events per combustion cycle. It rapidly expands when electricity is applied, making it suitable to act as the actuator in a diesel fuel injector. Mini Common Rail Injector Solenoid Valve Injector electronic Piezo Injector Tester Simulator CRI100. There is a relative compression test available using the wiTECH scan tool. 2 Factory EMI fuel injection law tester Nanjing Steam Turbine Co. If not, they could stretch and allow combustion gasses to blow past the injector, which can overheat the injector and cause it to fail. 326 Common Rail Fuel Injection Technology in Diesel Engines Power Solenoid valve. You will receive a handwritten report of Fuel Delivery, Return Rates, and Response Times. Visual inspection of solenoid and run in the Test Stand. The GDI Piezo operates at around 80 to 110 Volts DC and is good for only Piezo CRDI injectors. The magnetic unit can test GDI injectors and the fuel rail pressure control solenoid, which can sometimes employ 14 to 24 volts and is also PWM controlled. ![]() Piezo injectors are crucial in modern common rail diesel engines, instigating a rapid series of injection events which allow for greater efficiency, performance & reduced emissions.Īt the heart of a piezo injector is the piezoelectric (piezo) crystal. Injector hold down bolts must be replaced if they are removed, they are a torque to yield bolt. All Injectors will receive Ultrasonic Cleaning, Nozzle Flow Test, A visual inspection of nozzle condition with pictures emailed to you. 1) GDI Magnetic Injector and Fuel Rail Solenoid Tester. ![]()
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