Where is the fuel delivery check valve...

Where is the fuel delivery check valve...

Question 1 of 270705eccefa2bacbc34ba4d47871

Where is the fuel delivery check valve located in a jerk pump fuel injection system?

Question 1 of 27070

Q

Where is the fuel delivery check valve located in a jerk pump fuel injection system?

🔍 Key Concepts

• Jerk pump fuel injection system basic layout (plunger, barrel, delivery valve, injector/nozzle) • Flow path of fuel from supply/suction side → high‑pressure side → injector • Purpose of a delivery (check) valve: hold pressure in the high‑pressure line and prevent backflow

💭 Think About

• Trace the fuel’s path: from low‑pressure supply, into the jerk pump, then out toward the injector. At what point is backflow prevention and pressure holding most critical? • Ask yourself: Is the delivery/check valve protecting the suction side (low pressure) or the discharge side (high pressure) of the injection pump? • Consider where you would want to quickly cut off injection and reduce pressure in the injector line after each stroke.

✅ Before You Answer

• Verify which component is the high‑pressure discharge area of the jerk pump where fuel is sent toward the injector nozzle. • Confirm that a delivery valve is a type of check valve, located where it can prevent reverse flow from the injection line back into the pump. • Rule out locations that are clearly part of the low‑pressure/suction system or inside the engine cylinder rather than in the pump’s discharge passage.