Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 45, Problem 10ASRQ
To determine
The correct technician among the two, i.e., A and B who are discussing the loose wheel bearings.
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A start-up company wants to convert an ICE vehicle into an electric vehicle with the following specification.
Power: 250 (HP) horsepower, (note: 1HP = 745 W)
Range: 300-miles
Fuel economy: 33.5 kilometers per gallon of gasoline.
Efficiency of the ICE: 25%
Energy Conversion: One gallon of gasoline at 100% efficiency is equal to 33.5 kWh/gallon).
a)Calculate the EV consumption rate as Wh/km and find the total energy of the battery pack in KWh to replace the internal combustion engine.
b)Design an 8-module battery pack for this full electric vehicle without compromising its range and performance (power).
Use commercially available cylindrical cells lithium cell with 20Ah capacity and 3.125 V average voltage. Cell dimensions are 5cm diameter and 10 cm height. The electric motor requires 250 V input that will be provided directly from the battery pack, Report the configuration of each module in…
"11-17 The shaft shown in Figure P11-3 was designed in Problem 10-17. For the data in the
row(s) assigned from Table P11-1, and the corresponding diameter of shaft found in
Problem 10-17, design suitable bearings to support the load for at least 1E8 cycles at
1800 rpm. State all assumptions.
(a)
Using hydrodynamically lubricated bronze sleeve bearings with Ox = 15,
11d=0.75, and a clearance ratio of 0.001.
✓ ✓
cast-iron roller
FIGURE P11-3
Shaft Design for Problems 11-17
b
gear
key
assume bearings act
as simple supports
11-19 The shaft shown in Figure P11-4 was designed in Problem 10-19. For the data in the
row(s) assigned from Table P11-1, and the corresponding diameter of shaft found in
Problem 10-19, design suitable bearings to support the load for at least 5E8 cycles at
1200 rpm. State all assumptions.
(a)
Using hydrodynamically lubricated bronze sleeve bearings with Oy = 40,
1/d=0.80, and a clearance ratio of 0.002 5.
gear
gear
key
FIGURE P11-4
Shaft Design for Problems 11-19 and…
For the frame below calculate the bending moment at point R. Take P=40 and note that this value is used for both
the loads and the lengths of the members of the frame.
2.5P-
A
Q
B
R
С
45 degrees
✗
✗
P
i
19
Кур
-2P-
4PRN
-P-
-
Chapter 45 Solutions
Automotive Technology
Ch. 45 - List five things that could cause premature...Ch. 45 - Define lateral and radial runout.Ch. 45 - Prob. 3SACh. 45 - Define dynamic and static wheel balance.Ch. 45 - Describe the proper procedure to seal a puncture...Ch. 45 - The rim offset is the vertical distance between...Ch. 45 - Prob. 7SACh. 45 - Explain why a TPMS relearn should be performed...Ch. 45 - A tire that wobbles from side-to-side is said to...Ch. 45 - A front tire has excessive wear on both edges of...
Ch. 45 - All of the following statements are correct...Ch. 45 - All of the following statements are correct...Ch. 45 - Which of the following statements about sidewall...Ch. 45 - All of these statements about improper wheel...Ch. 45 - Prob. 7MCCh. 45 - Technician A says that the front wheel bearings on...Ch. 45 - Technician A says that dynamic wheel imbalance...Ch. 45 - Technician A says that front bearing assembly...Ch. 45 - Technician A says that replacement wheel rims...Ch. 45 - Prob. 5ASRQCh. 45 - While choosing the correct tire for a vehicle:...Ch. 45 - Technician A says that on most vehicles, the...Ch. 45 - Prob. 8ASRQCh. 45 - Prob. 9ASRQCh. 45 - Prob. 10ASRQ
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