Technician a Says That Closed Loop Is the Most Efficient

question 12

Multiple Choice

Technician A says that closed loop is the most efficient operating mode and allows the engine computer to control the air-fuel ratio with the most precision. Technician B says that open loop operation is used to improve performance during cold engine warm-up and is also used under heavy load or during wide open throttle operation. Who is correct?

• A) Technician A only
• B) Technician B only
• C) Both technicians
• D) Neither technician

---

Definitions:

Buoyancy and Insulation

Refers to the ability of an object to float in fluid due to its density being less than the fluid's, and the capacity to reduce heat transfer, respectively.

Oil Coating

A process of applying a layer of oil on surfaces to provide lubrication, protection from corrosion, or aesthetic enhancement.

Oil Pollution

The contamination of the environment, especially aquatic ecosystems, due to the release of oil and its derivatives.

Tanker Accidents

Incidents involving large cargo ships carrying bulk liquids, such as oil, that can lead to significant environmental disasters when spills occur.