AUTOMOTIVE TECHNOLOGY (W/MINDTAP)
7th Edition
ISBN: 9780357096772
Author: ERJAVEC
Publisher: CENGAGE L
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Textbook Question
Chapter 28, Problem 10ASRQ
While discussing the reasons why the use of E85 gasoline is good for consumers: Technician A says it is produced in the United States and can reduce our reliance on foreign oil. Technician B says an engine’s fuel consumption is greatly reduced. Who is correct?
a. Technician A
b. Technician B
c. Both A and B
d. Neither A nor B
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3
Answer:
002
PROBLEM 15.188
The rotor of an electric motor rotates at the constant rate
@₁ = 1800 rpm. Determine the angular acceleration of the rotor as the
motor is rotated about the y axis with a constant angular velocity 2
x of 6 rpm counterclockwise when viewed from the positive y axis.
α = (118.4 rad/s²)i
12 in..
10 in.
PROBLEM 15.187
At the instant considered the radar antenna shown rotates about
the origin of coordinates with an angular velocity
@ = ai + @j+wk Knowing that (VA) = 15 in./s,
(VB), 9 in./s, and (VB), = 18 in./s, determine (a) the angular
velocity of the antenna, (b) the velocity of point A.
B
10 in.
Answers:
=
(0.600 rad/s)i - (2.00 rad/s) j + (0.750 rad/s)k
V₁ = (20.0 in./s)i + (15.00 in./s) j + (24.0 in./s)k
3. An engine has three cylinders spaced at 120° to each other. The crank torque diagram can be simplified to a
triangle having the following values:
Angle
0°
Torque (Nm)
0
(a) What is the mean torque?
60°
4500
180°
180° to 360°
0
0
(b) What moment of inertia of flywheel is required to keep the speed to within 180 ± 3 rpm?
(c) If one cylinder of the engine is made inoperative and it is assumed that the torque for this cylinder is
zero for all crank angles, determine the fluctuation in speed at 180rpm for the same flywheel.
(a) 3375 Nm
(b) 50kgm
(c) ±21 rpm
Chapter 28 Solutions
AUTOMOTIVE TECHNOLOGY (W/MINDTAP)
Ch. 28 - Pump gasoline may contain a small amount of...Ch. 28 - List five advantages the use of piezoelectric...Ch. 28 - What does the Reid vapor pressure (RVP) test...Ch. 28 - List three alternative fuels for an internal...Ch. 28 - Why is the sulfur content in gasoline limited?Ch. 28 - What are oxygenates and why are they added to...Ch. 28 - Name three driveability factors that are affected...Ch. 28 - How does SCR lower the content in a diesels...Ch. 28 - Prob. 1TFCh. 28 - True or False? The diesel fuels antiknock quality...
Ch. 28 - True or False? Piezoelectric materials can emit a...Ch. 28 - Which of the following statements about hydrogen...Ch. 28 - Which of the following chemicals is commonly added...Ch. 28 - Technician A says that the use of methanol in...Ch. 28 - Technician A says that reformulated gasoline...Ch. 28 - Technician A says that dedicated vehicles are...Ch. 28 - Technician A says white smoke in the exhaust of a...Ch. 28 - Technician A says piezo material is a type of...Ch. 28 - Prob. 6ASRQCh. 28 - While discussing chemicals that are currently...Ch. 28 - While discussing common rail fuel injection...Ch. 28 - Technician A says diesel engines consume less fuel...Ch. 28 - While discussing the reasons why the use of E85...
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