Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
6th Edition
ISBN: 9780135257272
Author: James D. Halderman
Publisher: PEARSON
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Textbook Question
Chapter 18, Problem 6CQ
A normally aspirated automobile engine loses about ______________ power per 1,000 feet of altitude.
- a. 1%
- b. 3%
- c. 5%
- d. 6%
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8.a. When a machine is tested, the volume of cooling air is 1250 cfm. If the temperature of the entering air is 25 C and the temperature of the outgoing air is 35 C, the loss in the machine isA. 7.1 kw.B. 24.8 kw.C. 12.5 kw.D. 17.7 kw.
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QUESTION 10
A four-cylinder, 3.6-liter, four-stroke cycles Sl engine operates at 2700 RPM with a volumetric efficiency of 87 %.
The fuel used is methyl alcohol.
The chemical reaction of methyl alcohol in a Stoichiometric condition is:
CH3OH + 1.5(02 + 3.76N2) - CO2 + 2H20 + 1.5(3.76N2)
The chemical reaction of methyl alcohol in an equivalence ratio of o = 1.23 is:
CH3OH + m(02 + 3.76N2) → NCO2 + pCO + 2H20 + m(3.76N2)
During combustion, all hydrogen is converted to water, and all carbon is converted to CO2 and CO.
The density of standard air is 2.25 kg/m. The atomic masses are as follows: H=1, C=12, 0-16, and N=14.
Calculate the following:
m is
n is
p is
Mole fraction of CO in the exhaust is
The mass flow rate of air into the engine is
gram/s.
Chapter 18 Solutions
Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
Ch. 18 - How is the angle between power strokes determined?Ch. 18 - What brands of vehicles use horizontally opposed...Ch. 18 - Prob. 3RQCh. 18 - If an engine at sea level produces 100 hp, how...Ch. 18 - What is the definition of horsepower?Ch. 18 - The chemical energy in fuel is converted to heat...Ch. 18 - An SOHC V-8 engine has how many camshafts? a. One...Ch. 18 - Prob. 3CQCh. 18 - Torque is expressed in units of _______________....Ch. 18 - Horsepower is expressed in units of...
Ch. 18 - A normally aspirated automobile engine loses about...Ch. 18 - One cylinder of an automotive four-stroke cycle...Ch. 18 - How many rotations of the crankshaft are required...Ch. 18 - A rotating force is called ________________. a....Ch. 18 - Technician A says that a crankshaft determines the...
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