EBK AUTOMOTIVE TECHNOLOGY
6th Edition
ISBN: 9780135257470
Author: Halderman
Publisher: VST
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Question
Chapter 1, Problem 10CQ
To determine
How many content areas are generally found in the automotive service systems?
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6/86 The connecting rod AB of a certain internal-combustion engine weighs 1.2 lb with mass center at G
and has a radius of gyration about G of 1.12 in. The piston and piston pin A together weigh 1.80 lb. The
engine is running at a constant speed of 3000 rev/min, so that the angular velocity of the crank is
3000(2)/60 = 100л rad/sec. Neglect the weights of the components and the force exerted by the gas in
the cylinder compared with the dynamic forces generated and calculate the magnitude of the force on the
piston pin A for the crank angle 0 = 90°. (Suggestion: Use the alternative moment relation, Eq. 6/3, with B
as the moment center.)
Answer
A = 347 lb
3"
1.3"
B
1.7"
PROBLEM 6/86
6/85 In a study of head injury against the instrument panel of a car during sudden or crash stops where
lap belts without shoulder straps or airbags are used, the segmented human model shown in the figure is
analyzed. The hip joint O is assumed to remain fixed relative to the car, and the torso above the hip is
treated as a rigid body of mass m freely pivoted at O. The center of mass of the torso is at G with the initial
position of OG taken as vertical. The radius of gyration of the torso about O is ko. If the car is brought to a
sudden stop with a constant deceleration a, determine the speed v relative to the car with which the
model's head strikes the instrument panel. Substitute the values m = 50 kg, 7 = 450 mm, r = 800 mm, ko
= 550 mm, 0 = 45°, and a = 10g and compute v.
Answer
v = 11.73 m/s
PROBLEM 6/85
Chapter 1 Solutions
EBK AUTOMOTIVE TECHNOLOGY
Ch. 1 - In 1900, what was the most produced vehicle...Ch. 1 - What parts are included in the vehicle chassis?Ch. 1 - Why were early engines called flat heads?Ch. 1 - Prob. 4RQCh. 1 - The powertrain consists of what components?Ch. 1 - Prob. 1CQCh. 1 - Prob. 2CQCh. 1 - Which component is not part of the chassis system?...Ch. 1 - Early engines were called flat head design because...Ch. 1 - A V-type engine could have how many cylinders? a....
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