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 7CQ
One cylinder of an automotive four-stroke cycle engine completes a cycle every _______________.
- a. 90 degrees
- b. 180 degrees
- c. 360 degrees
- d. 720 degrees
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1.Why have eight cylinders in an engine? why not have one big cylinder of the same displacement of the eight cylinders instead?
27. What causes white smoke in two stroke locomotive engines?
28. Why efficiency of gas turbines is lower compared to internal combustion engines?
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10 of 10 O 01:31
A 6-cylinder, 4-stroke cycle engine will have a power stroke of
o One power stroke for every 90 revolution of the crankshaft
o One power stroke for every 240 * revolution of the crankshaft
o One power stroke for every 180 revolution of the crankshaft
O One power stroke for every 120 revolution of the crankshaft
1 2 3 4 5 6 7 8 9 10
A
engine develops power output for each engine revolution. *
Your answer
The changes in the valve clearance on opposed-type engines using high lifters
are accomplished by rocker arm replacement. TRUE OR FALSE? *
Your answer
This is the power required to operate the engine components and move air into
and exhaust gasses out of the engine. *
Your answer
The order occurrence of five events of a four-stroke cycle engine is: *
intake, ignition, compression, power, exhaust
intake, ignition, compression, exhaust, power
intake, compression, ignition, power, exhaust
intake, power, compression, ignition, exhaust
intake, compression, ignition, exhaust, power
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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- Number of explosions of piston on a single cylinder, four stroke cycle engine in 100 revolutions of the crankshaft. Ans. 50 explosionsarrow_forward1. Draw a table of the working process of a 4-stroke 6-cylinder engine. The firing sequence is 1-5-3-6-2-4.arrow_forwardIn a four-cylinder engine with a firing order of 1-3-4-2, what stroke is piston #4 on when #1 is on its compression stroke?arrow_forward
- 1. Which engines can have their cylinders located below the crankshaft? Radial Engines In-Line Engines V-type Engines Opposed-Type Engines True or False: John Barber created the first practical heat engine. V-type engines have the least vibration in all types of reciprocating engine. Single-type radial engines can have 6 cylinders.arrow_forwardO Snociogr O Facebook ology.com/common-assessment-delivery/start/4717647553?action=onresume&submissionid=583526132 ube Maps 9 of 10 0127 I 01:3 A single-cylinder, double-acting, four-stroke cycle engine consists of O Two power strokes for every revolution of the crankshaft O One power stroke for every revolution of the crankshaft O One power stroke for every two revolutions of the crankshaft O none of these 1 2 3 4 5 6 7 8 9 10 Ne TermE of Usearrow_forwardA engine develops power output for each two engine revolution. * Your answer It is the difference in expansion amounts between the cylinder head and pushrod that effectively increases the space between the valve stem and the rocker's arm. * Your answer On a four-stroke cycle reciprocating engine, which strokes are both valves close? * Intake Power Ignition Compression Exhaust It represents the net power output of the engine at the crankshaft. * Your answer If the fuel/air ratio is proper and ignition timing is correct, the combustion process should be completed just after center at the beginning of the power stroke. * Your answerarrow_forward
- What are the advantages and disadvantages of two stroke and four stroke engines. (any four points)arrow_forwardB) Why A two stroke cycle engine gives double the number of power strokes as compared to the four stroke cycle engine, at the same engine speed.arrow_forwardWhich does makes the volumetric efficiency of the reciprocating engine decrease? * Low cylinder head temperatures Improper valve timing Full throttle operation Sharp bends in the induction system High carburetor air temperatures When the piston reaches the bottom center it reverses direction and starts moving up on the compression stroke. TRUE OR FALSE? * Your answer What happens with the volumetric efficiency when the engine's heat increases? Your answer As an aircraft climbs, air density decreases, thereby decreasing the amount of air in the fuel/air mixture. This results in a vibrant air/fuel mixture which causes a reduction in engine power. TRUE OR FALSE? * Your answerarrow_forward
- 28 .The torque developed by the engine is maximum (a) at minimum speed of engine (b) at maximum speed of engine (c) at maximum volumetric efficiency speed of engine (d) at maximum power speed of enginearrow_forward6. Why have eight cylinders in an engine? why not have one big cylinder of the same displacement of the eight cylinders instead? 7. What causes white smoke in two stroke locomotive engines? 8. Why efficiency of gas turbines is lower compared to internal combustion engines? 9. Why do we not use different technology to start both spark ignition /compression ignition engine? 10. Which has more efficiency: diesel engine or petrol engines?arrow_forwardQUESTION 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.arrow_forward
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