Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 25, Problem 7RQ
When an engine is running lean, the voltage signal from the oxygen sensor will be (low or high).
Expert Solution & Answer
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Question L: A chain drive has information per the table below. Use only this table for this question! You
will use Table 7-14 to select components for the chain drive.
What is the length of the chain in inches that you should purchase for this application? (First, round up to
an even number of pitches for the chain length. Then calculate the chain length in inches. (Type in an
integer.)
Chain pitch: p =
0.500
inches
Roller chain size number =
40
Motor speed n₁ =
500
rpm
Design power
3.50
hp
Speed ratio: VR =
2.0
Nominal Center Distance: C =
24.00
inches
TABLE 7-14 Horsepower Ratings-Single-Strand Roller Chain No. 40
No. of
0.500-in pitch
Rotational Speed of small sprocket in rpm
teeth
10
25
11
0.06 0.14
12
0.06 0.15
13
0.07 0.16
14
15
0.08 0.19
16
0.08 0.20
0.39 0.75
17
0.09 0.21
0.41 0.80
18
20
0.09 0.22
19 0.10 0.24
0.10 0.25 0.48
21
1.12
22 0.11 0.27 0.53 1.03 1.81 201
23 0.12 0.28 0.56 1.08 1.90 2.10
24 0.12 0.30 0.58
1.98 2.19
25 0.13 0.31 0.60 1.17 2.06 2.28 3.36 5.49
50 100 180…
Question K: A chain drive has information per the table below. Use only this table for this question! You
will use Table 7-14 to select components for the chain drive.
How many teeth are in the large sprocket? (Type in an integer.)
Chain pitch: p=
0.500
inches
Roller chain size number =
40
Motor speed n₁ =
500
rpm
Design power =
3.50
hp
Speed ratio: VR =
2.0
Nominal Center Distance: C =
24.00
inches
No. of
teeth
TABLE 7-14 Horsepower Ratings-Single-Strand Roller Chain No. 40
0.500-in pitch
Rotational Speed of small sprocket in rpm
10
25 50 100 180
200 300 500 700 900 1000
11
12
0.06 0.14 0.27 0.52 0.91 1.00
0.06 0.15
0.99
1.48
2.42
3.34 4.25 4.70
0.29 0.56
1.09
1.61
2.64
3.64 4.64 5.13
13
0.07 0.16 0.31 0.61
1.07
1.19 1.75
2.86
3.95 5.02 5.56
14
0.07 0.17 0.34 0.66
1.15
1.28
1.88
3.08
4.25 5.41 5.98
15
0.08 0.19
0.36 0.70
1.24 1.37
2.02
3.30
4.55
5.80 6.41
16
0.08 0.20 0.39
0.75
1.32 1.46 2.15 3.52
4.86 6.18 6.84
17
0.09 0.21 0.41 0.80 1.40 1.55
18
0.09 0.22 0.43 0.84
19
0.10 0.24 0.46…
Question D: Dimensions, material properties, and certain constants for a rod are shown in the table below.
Use only this table for this question! Other data can be obtained from the figures and tables shown below.
Input Data:
Shaft material specification:
Machined Steel
Type of Stress:
Reversed, repeated bending
Tensile strength: s₁ =
825
MPa
Reliability:
99.0%
Material factor: C
0.80
Type of stress factor: Cst
Shaft diameter: D=
1.00
Use 0.80 for cast steel
Use 1.00 for bending stress
45
mm
TABLE 5-3 Approximate Reliability
Desired reliability
Factors, CR
CR
0.50
1.0
0.90
0.90
0.99
0.81
0.999
0.75
Chapter 25 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 25 - OBD II systems use several modes of operation....Ch. 25 - List the four ways that individual components can...Ch. 25 - True or False? A bad ground can cause an increase...Ch. 25 - True or False? An A/F ratio sensor can be tested...Ch. 25 - A typical normal oxygen sensor signal will toggle...Ch. 25 - Prob. 6RQCh. 25 - When an engine is running lean, the voltage signal...Ch. 25 - List six steps involved in performing a visual...Ch. 25 - Many control systems have operating modes that can...Ch. 25 - Which of the following statements about zirconium...
Ch. 25 - Describe the typical procedure for adjusting a TP...Ch. 25 - Why does the rotor for a CKP have one or more...Ch. 25 - A system may fail the catalyst monitor test for...Ch. 25 - A defective LAT sensor or circuit may cause the...Ch. 25 - Which of the following is the least likely cause...Ch. 25 - Technician A says that an oxygen sensor can be a...Ch. 25 - Prob. 2ASRQCh. 25 - While discussing ECT sensor diagnosis: Technician...Ch. 25 - While discussing Hall-effect vehicle speed sensor...Ch. 25 - While discussing TP sensor diagnosis: Technician A...Ch. 25 - While diagnosing the cause of a hard starting...Ch. 25 - While discussing testing OBD II system components:...Ch. 25 - When testing a frequency varying MAF: Technician A...Ch. 25 - Technician A says that a faulty MAF sensor can...Ch. 25 - While discussing the MIL on OBD 11 systems:...
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- Use only the following information for this question. The available V-belt sizes are given in Table 7-2 from the textbook as shown below. Your motor is running at 1160 rpm and your design power is 3 hp. Figure 7-13 is shown below to help you select a V-belt. The small V-belt pulley has a diameter of 8.00 inches, and the speed ratio between the driving and driven pulley is 1.50. Your machine needs a pulley center distance of roughly 26.0 inches. What is the maximum center distance in inches that you could use in this application, if the machine design warranted it? (Type in a one-decimal numberarrow_forwardDimensions, material properties, and certain constants for a rod are shown in the table below. Use only this table for this question! Other data can be obtained from the figures and tables shown belowarrow_forwardUse only the following information for this question. The available V-belt sizes are given in Table 7-2 from the textbook as shown below. Your motor is running at 1160 rpm and your design power is 3 hp. Figure 7-13 is shown below to assist you in selecting a V-belt. The small V-belt pulley has a diameter of 8.00 inches, and the speed ratio between the driving and driven pulleys is 1.40. Your machine needs a pulley center distance of roughly 24.0 inches. What is the belt length in inches that you should select from Table 7-2? (Type in an integer.) Note: Select a belt length from Table 7-2 that is closest to the one you calculated. Type in a number corresponding to the selected belt lengtharrow_forward
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- Question A: Use only the following information for this question. A solid circular link in a packaging machine mechanism has a diameter of 0.250 inches. It is subjected to a load that varies from a tensile force of 2100 lb to a tensile force of 1500 lb. What is the alternating stress in psi? (Type in an integer.)arrow_forwardUse only the following information for this question. A high-torque AC motor running a centrifugal pump is driving the small pulley of a V-Belt drive. The pump operates 10 hours per day. The motor is rotating at 1175 rpm, 150 lb-in torque, and the V-belt is moving at 2,770 feet/minute. The speed ratio between the driving and driven pulley is 1.75. Service Factors are shown in the table below. What is the diameter in inches of the larger pulley? (Type in a two-decimal numberarrow_forwardQuestion B: Use only the following information for this question. A solid circular link in a packaging machine mechanism has a diameter of 0.125 inches. It is subjected to a load that varies from a tensile force of 600 lb to a tensile force of 200 lb. What is the stress ratio? (Type in a two-decimal number.)arrow_forward
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