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two-spring injection-nozzle with needle-displacement sensor

• low fuel injection (the valve needle is lifted against the weak spring # 1)
• high fuel injection (the valve needle is lifted against stiff spring # 2)
• the needle-displacement sensor senses start of injection

description

ordernumber 291

see also:

common-rail high-pressure pump

air flow in a variable turbocharger

dual-stage charging (twin turbo)

one-vane vacuum pump