The control rack to a unit injector...

Study

Question 1 of 205eccefa2bacbc34ba4d478b1

The control rack to a unit injector regulates fuel delivery by __________.

Back

Question 1 of 20

5eccefa2bacbc34ba4d478b1

The control rack to a unit injector regulates fuel delivery by __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

• How a unit injector meters fuel without an external high‑pressure fuel line • What the control rack physically does to the injector plunger or fuel ports • How the helix on a plunger affects the start/stop of injection

💭 Think About

• Visualize the parts: plunger, barrel, helix, ports, spring, and rack. Which part can the rack realistically move or turn? • Think about how changing when ports open/close will change the quantity of fuel injected, without changing how far the plunger travels up and down. • Eliminate any options that would require the rack to stretch, compress, or directly change the length of the stroke—does the rack actually do that mechanically?

✅ Before You Answer

• Identify which choice involves changing the angular position of the plunger relative to fuel ports. • Confirm in your mental diagram which component the rack’s teeth engage with inside a typical unit injector. • Make sure the correct option focuses on timing of spill/port closure, not on physically lengthening the stroke or only changing spring force.

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed

Study

Question 1 of 205eccefa2bacbc34ba4d478b1

The control rack to a unit injector regulates fuel delivery by __________.

Back

Question 1 of 20

5eccefa2bacbc34ba4d478b1

The control rack to a unit injector regulates fuel delivery by __________.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed