When the air valve is opened to admit...

Question 1 / 270705eccefa3bacbc34ba4d47d6e

Question 1 of 270705eccefa3bacbc34ba4d47d6e

When the air valve is opened to admit starting air to a diesel engine pneumatic starting motor, the valve should be opened rapidly to __________.

Back

Question 1 of 27070

When the air valve is opened to admit starting air to a diesel engine pneumatic starting motor, the valve should be opened rapidly to __________.

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

🔍 Key Concepts

• Pneumatic starting motors on diesel engines and how they are driven by high-pressure air • What happens inside air lines, valves, and motor components when air flow is applied suddenly vs. slowly • The role of lubricators, valve seats, and drive pinions in air-start systems

💭 Think About

• Think about which component is most sensitive to partial opening of the valve and low, restricted air flow. • Ask yourself: if you open the valve slowly, what effect does that have on the speed and engagement of the starting motor? • Consider which choice describes a performance requirement for starting the motor versus a damage-prevention concern that would be less affected by how fast you open the valve.

✅ Before You Answer

• Which option directly relates to the mechanical engagement of the starting system rather than just air properties or wear surfaces? • Which component (lubricator, pinion, valve seat, air charge) actually depends on having full working air pressure established quickly? • Verify which choice is about the correct operation of the starter mechanism, not just protecting small parts or increasing air density.

Question 1 of 27070

When the air valve is opened to admit starting air to a diesel engine pneumatic starting motor, the valve should be opened rapidly to __________.

prevent damage to the air line lubricator

ensure proper operation of the Bendix drive pinion

prevent damage to the valve seat

increase the air charge density to the motor

Loading interactive features...

Question 1 / 270705eccefa3bacbc34ba4d47d6e

Question 1 of 270705eccefa3bacbc34ba4d47d6e

When the air valve is opened to admit starting air to a diesel engine pneumatic starting motor, the valve should be opened rapidly to __________.

Back

Question 1 of 27070

When the air valve is opened to admit starting air to a diesel engine pneumatic starting motor, the valve should be opened rapidly to __________.

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