Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Question
Chapter 4, Problem 1RQ
To determine
The CAFÉ standards under which vehicles are tested.
Expert Solution & Answer
Explanation of Solution
CAFÉ stands for Corporate Average Fuel Economy standards. These were established in 1975 to build more fuel-efficient vehicles to increase the overall fuel efficiency of the vehicles. Under the CAFÉ standards, different models from different manufacturers of vehicles are tested for the number of miles they can be driven on a gallon of gas. Then the fuel efficiencies of these vehicles are averaged together. If the average fuel economy of a manufacturer falls below the usual requirement, then the manufacturer has to cover CAFÉ credits or may have to pay a penalty. For this the car makers have replaced many parts of the engine with new technology and techniques to attain higher fuel efficiency in addition to get increased power output. They replaced many manually operated systems with automatic or electronic system to get more fuel efficient vehicles and also get less emission from burning of fuel.
According to estimation, due to CAFÉ standards, the fuel economy will increase nearly to 54.5 mpg between the years 2017 and 2025.
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Students have asked these similar questions
Multiple Choice
Circle the best answer to each statement.
1. Which type of surface deviation is controlled by a cy-
lindricity tolerance but not by a circularity tolerance?
A.
B.
C.
Ovality
Taper
Lobing
D. None of the above
2. When verifying a cylindricity tolerance, the inspec-
tion method must be able to collect a set of points and
determine the:
A. Distance between two coaxial cylinders that con-
tain the set of points
B.
Cylinder that circumscribes the set of points
C. Cylinder that inscribes the set of points
D.
Distance between two coaxial circles that contain
the set of points
3. Where Rule #1 applies to a cylindrical regular feature
of size, the tolerance value of a cylindricity tolerance
applied to the feature of size must be
tolerance.
A. Less than
B. Equal to
C. Greater than
D. None of the above
the size
4. Which of the following modifiers may be applied with
a cylindricity tolerance?
A. M
B.
C. ℗
D. Ø
5. Which geometric tolerance can provide an indirect
cylindricity…
The beam AB is attached to the wall in the xz plane by a
fixed support at A. A force of
F = (−129î + 69.0ĵ + 3591) N is applied to the end of
the beam at B. The weight of the beam can be modeled with
a uniform distributed load of intensity w = 85.0 N/m acting in
the negative z direction along its entire length. Find the
support reactions at A.
Z
с
A
b
a
B
F
y
Cc 10
BY NC SA
2016 Eric Davishahl
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Values for dimensions on the figure are given in the following.
table. Note the figure may not be to scale.
Variable
Value
a
5.60 m
b
5.00 m
C
3.70 m
A
II
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MA = (
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Chapter 4 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 4 - Prob. 1RQCh. 4 - Explain the four strokes of the internal...Ch. 4 - In addition to the battery, what does the charging...Ch. 4 - Which of the following is not a common emission...Ch. 4 - Automatic transmissions use a instead of a clutch...Ch. 4 - Which of the following is not one of the strokes...Ch. 4 - Prob. 7RQCh. 4 - Which is not a common automotive fuel? Gasoline...Ch. 4 - What does the valve train do? It delivers fuel to...Ch. 4 - Technician A says that liquid cooling an engine...
Ch. 4 - Prob. 11RQCh. 4 - Which emission control system introduces exhaust...Ch. 4 - Prob. 13RQCh. 4 - Technician A says that a transaxle delivers torque...Ch. 4 - Which of the following is not part of the running...Ch. 4 - Which of the following statements about unibody...Ch. 4 - Which type of transmission uses pulleys to change...Ch. 4 - Prob. 18RQCh. 4 - Prob. 19RQCh. 4 - What two major engine components work together to...Ch. 4 - Technician A says that an air-conditioning system...Ch. 4 - The boiling point of the coolant in an engines...Ch. 4 - While discussing the operation of air-conditioning...Ch. 4 - Prob. 24RQCh. 4 - Which of the following is not accomplished by the...
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