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Difficulty: MediumAuthor's Primary Purpose

Read the passage below:

High-pressure common rail (HPCR) diesel fuel systems operate under extreme tolerances and pressures exceeding 30,000 psi, making them exceptionally susceptible to particulate contamination. Even microscopic abrasive particles that bypass standard primary filters can rapidly erode injector nozzles and score pump plungers, causing catastrophic loss of combustion efficiency and severe engine misfires. Consequently, maintenance technicians must implement secondary micro-filtration units rated at two microns and enforce stringent closed-system fuel handling procedures during field servicing to prevent premature fuel system degradation.

Statement: The author's primary purpose in the passage is to explain why high-pressure common rail fuel systems require advanced filtration and strict contamination control practices.

Answer: Answer

Answer

True
The passage details how extreme tolerances and high pressures leave fuel systems susceptible to particulate wear, directly justifying the need for secondary filtration and closed-system servicing. Thus, the statement accurately defines the author's main purpose.

Step-by-Step Solution

1
Identify the primary topic and structural focus of the passage
The text discusses how high operating pressures make common rail diesel systems vulnerable to microscopic contaminants and concludes with mandatory filtration and handling requirements.
Understanding the problem-solution structure allows the reader to synthesize the overarching communicative objective.
2
Evaluate whether the provided statement accurately reflects the author's primary communicative objective
The statement accurately identifies the central purpose of explaining the need for specialized filtration and contamination control.
The author's main goal encompasses explaining the underlying vulnerability to justify the prescribed maintenance safeguards.

Key Concept

Evaluating the author's primary communicative purpose in a technical passage
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Author's Primary Purpose

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