AUTOMOTIVE TECHNOLOGY (W/MINDTAP)
7th Edition
ISBN: 9780357096772
Author: ERJAVEC
Publisher: CENGAGE L
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Chapter 51, Problem 8ASRQ
While discussing what would happen if too much metal is removed from a drum by machining: Technician A says that noise can result from the thin drum vibrating when the brakes are applied. Technician B says that the brakes could fade because the thin drum is unable to absorb heat during braking. Who is correct?
- Technician A only
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A brake jaw, A is pressed against the drum, B. Calculate the brake arm, X(m₂).F= 250NBraking torque = 30Nmµ=0.35Around point A:Fm₂-Nm₁-µm₃=0N=Fm₂/m1+ µm₃MBrake =µ·D/2= µ·D/2MBrake =Fµm₂D/2(m₁- µm₃)(X)m₂=FµD/Mbrake·2(m1- µm₃)(X)m₂=250·0.35.0.3/30·2(0.250-0.35·0.06)=?I don’t get some likely value?
Q7 (12 Marks)
For the system shown in Fig.3:
1- Draw the overall block diagram.
2- Determine the transfer function (Pc(s)/E(s)).
Orifice→
Ps
Actuating error signs)
Flapper
Pb+Pb.
Nozzle.
A
X+X+
Ri
A
I
R2
ㅍ
think
+y
Pc+PC
Figures 4: show a pneumatic controller. The pneumatic
relay has the characteristic
that pc=K pb
, where K>0. What kind of control action does this
controller produce?
a. Derive the mathematical model for the system
b. Derive the transfer function Pc(s)/E(s)
-Solve step by step
Orifice
F+Ph
R₁
Actuating error signal
Flapper
Nozzle.
x+x
F+Pe
think
Chapter 51 Solutions
AUTOMOTIVE TECHNOLOGY (W/MINDTAP)
Ch. 51 - Name the two methods of attaching brake lining...Ch. 51 - Explain how drum brakes create a self-multiplying...Ch. 51 - List at least five separate types of wear and...Ch. 51 - What is the job of wheel cylinder stops?Ch. 51 - Explain the operation of an integral drum brake...Ch. 51 - Prob. 6SACh. 51 - True or False? Backing plates, struts, levers, and...Ch. 51 - True or False? The name duo-servo drum brake is...Ch. 51 - In a typical drum brake, which component provides...Ch. 51 - Which of the following statements about drum brake...
Ch. 51 - Brake linings should be replaced when. linings are...Ch. 51 - In the unapplied position, drum brake shoes arc...Ch. 51 - Duo-servo drum brakes are also known as what type...Ch. 51 - On most vehicles, the automatic adjuster cables or...Ch. 51 - A buildup of brake dust and dirt between the...Ch. 51 - Technician A says that an out-of-round drum can...Ch. 51 - Technician A says that a grinding noise from a...Ch. 51 - It has been determined that chatter and brake pull...Ch. 51 - Technician A says that the discard dimension of a...Ch. 51 - After resurfacing a brake drum: Technician A...Ch. 51 - Drum linings are badly worn at their heel and toe:...Ch. 51 - When machining brake drums: Technician A tries to...Ch. 51 - While discussing what would happen if too much...Ch. 51 - Technician A checks the surface of the drum for...Ch. 51 - While discussing pull during braking: Technician A...
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