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# The amount of work done by each stroke of an automobile ISBN: 9780201380279 40

## Solution for problem 19P Chapter 4

An Introduction to Thermal Physics | 1st Edition

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Problem 19P

PROBLEM 19P

The amount of work done by each stroke of an automobile engine is controlled by the amount of fuel injected into the cylinder: the more fuel, the higher the temperature and pressure at points 3 and 4 in the cycle. But according to below equation, the efficiency of the cycle depends only on the compression ratio (which is always the same for any particular engine), not on the amount of fuel consumed. Do you think this conclusion still holds when various other effects such as friction are taken into account? Would you expect a real engine to be most efficient when operating at high power or at low power? Explain.

Equation: Step-by-Step Solution:
Step 1 of 3
Step 2 of 3

Step 3 of 3

##### ISBN: 9780201380279

Since the solution to 19P from 4 chapter was answered, more than 267 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: An Introduction to Thermal Physics , edition: 1. This full solution covers the following key subjects: Fuel, engine, amount, equation, power. This expansive textbook survival guide covers 10 chapters, and 454 solutions. The full step-by-step solution to problem: 19P from chapter: 4 was answered by , our top Physics solution expert on 07/05/17, 04:29AM. An Introduction to Thermal Physics was written by and is associated to the ISBN: 9780201380279. The answer to “The amount of work done by each stroke of an automobile engine is controlled by the amount of fuel injected into the cylinder: the more fuel, the higher the temperature and pressure at points 3 and 4 in the cycle. But according to below equation, the efficiency of the cycle depends only on the compression ratio (which is always the same for any particular engine), not on the amount of fuel consumed. Do you think this conclusion still holds when various other effects such as friction are taken into account? Would you expect a real engine to be most efficient when operating at high power or at low power? Explain.Equation:” is broken down into a number of easy to follow steps, and 110 words.

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