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Which of the following valve guards the system against excess pressure?

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in Automotive Engine Design by (137k points)
Which of the following valve guards the system against excess pressure?

(a) Pressure limiter

(b) Inlet

(c) Outlet

(d) Both inlet and Outlet

I got this question by my school teacher while I was bunking the class.

The origin of the question is Modern Common Rail Fuel Injection System in portion Diesel Engine Fuel Supply System of Automotive Engine Design

1 Answer

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Right choice is (a) Pressure limiter

To explain: The fuel pressure in the rail is independent of engine speed and the injected fuel quantity. Flow limiters protect the system against the consequences of a potential leak of the injector. A pressure limiter valve guards the system against excess pressure.

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