What is a critical factor for improving combustion engine efficiency?
Understand the Problem
The question is asking about the key factors that can enhance the efficiency of combustion engines, specifically looking for one critical factor among the provided options.
Answer
Expansion ratio
The expansion ratio is a critical factor for improving combustion engine efficiency, as it influences the amount of work extracted during the expansion phase of the engine cycle.
Answer for screen readers
The expansion ratio is a critical factor for improving combustion engine efficiency, as it influences the amount of work extracted during the expansion phase of the engine cycle.
More Information
Aside from the expansion ratio, internal combustion engine efficiency can also be improved through factors such as thermodynamic efficiency, gas exchange efficiency, and mechanical efficiency. Technologies like low-temperature combustion and cooled EGR are researched for further enhancements.
Sources
- Engine efficiency - en.wikipedia.org
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