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Why are there safety precautions with common rail that don't exist with EUI?

A. Because the fuel piped between the pump and injectors is high pressure
B. Because the injectors are less complex
C. Because the fuel pipes are external
D. Because of a fuel rail that creates the high pressure

Answer :

Final answer:

Safety precautions in Common Rail systems are primarily due to the high-pressure fuel delivery and the design of the fuel rail that manages this pressure. These factors create potential risks that require robust safety measures. In comparison, EUI systems are less complex and operate under lower pressures, resulting in fewer safety requirements.


Explanation:

Understanding Safety Precautions in Common Rail vs. EUI

In modern diesel engines, the use of different fuel injection systems, such as Common Rail and Electronic Unit Injection (EUI), leads to varied safety precautions mainly due to pressure management concerns.

Reasons for Safety Precautions with Common Rail

1. High Pressure Fuel Delivery: The fuel piped between the pump and injectors in a Common Rail system is under very high pressure, which presents a risk of leaks or ruptures. This necessitates robust safety precautions to manage the potential dangers associated with such pressures.

2. Fuel Rail Design: The presence of a fuel rail in Common Rail systems that creates and maintains high pressure further increases the need for comprehensive safety measures. This rail centralizes the high-pressure fuel delivery and requires special design considerations to handle the risk of failure.

3. External Fuel Pipes: In Common Rail systems, the fuel pipes are external, which raises concerns about the visibility of potential leaks and increases the likelihood of contact with hot engine components, thereby necessitating additional safety protocols.

In contrast, EUI systems tend to have fewer safety concerns mainly due to their less complex design with integrated components that do not rely on high external pressures.


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