Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Textbook Question
Chapter 12, Problem 4MC
Many engines with WT have a phaser mounted to the end of one or more camshafts. Which of the following statements is not true?
- A phaser is used to alter valve timing.
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Which of the following statements about the camshaft is FALSE?
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Chapter 12 Solutions
Automotive Technology
Ch. 12 - Explain staged and continuously variable value...Ch. 12 - Prob. 2SACh. 12 - Define valve margin.Ch. 12 - What usually causes warpage in an aluminum cylin...Ch. 12 - What are the two ways pushrods can be checked for...Ch. 12 - True False? Fiats MultiAir system relies on...Ch. 12 - True False? Camshaft straightness is checked using...Ch. 12 - Which of the following is not true of knurling? It...Ch. 12 - To allow the engine to run on the Atkinson cycle,...Ch. 12 - To ensure proper seating of the valve, the valve...
Ch. 12 - Many engines with WT have a phaser mounted to the...Ch. 12 - Multiple valve engines tend to be more efficient...Ch. 12 - Which of the following is not a type of valve...Ch. 12 - What type of valve lifter automatically...Ch. 12 - Prob. 8MCCh. 12 - While discussing the reasons for resurfacing a...Ch. 12 - While inspecting the timing gears of an engine:...Ch. 12 - Technician A says that positive valve stem seals...Ch. 12 - Prob. 4ASRQCh. 12 - Technician A says an engine may use one or more...Ch. 12 - Technician A says it is not necessary to measure...Ch. 12 - While discussing the Valvetronic system:...Ch. 12 - While checking a hydraulic phaser after the...Ch. 12 - While servicing a pair of aluminum cylinder heads:...Ch. 12 - While discussing camshafts Technician A says valve...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- While discussing camshafts Technician A says valve lift is based only on the height of the cam lobe. Technician B says valve duration is based on the height of the lobe. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardTrue or False? The camshaft is always located in the engine block.arrow_forwardWhat device in the valve train changes rotary motion into reciprocating motion? a. Eccentric Cam Bushing Mandrelarrow_forward
- True False? Camshaft straightness is checked using V-blocks and a feeler gauge?arrow_forwardA six-cylinder engine has a 1 5 3 6 2 4 firing order. Technician A says that after cylinder number 1 begins its intake stroke, the crankshaft will have to travel 240° before cylinder number 3 begins its intake stoke. Technician B says that when cylinder number 3 and 4 are at TDC, cylinders number 5 and 2 are at BDC. Who is correct and explain why? Technician A Technician B Both A and B Neither A nor Barrow_forwardCam bearings in OHV engines are typically whichtype?a. Split insertb. Full-roundc. Thrustd. None of the abovearrow_forward
- True or False? The camshaft is always locatedin the engine block.arrow_forwardWhich of the following ensures proper timing of the intake and exhaust valve events? The length of the tappets relative to the pushrods. Proper pairing of the gear set joining the crankshaft to the camshaft. The pulse timer mounted in series with the piston. The installation of the flywheel key.arrow_forwardTech A states to check the camshaft for lift, the cam must be removed from the engine. Tech B says to check for a bent camshaft, the cam must be removed and placed onto a set of V-blocks and checked with a dial indicator. Who is correct?arrow_forward
- Technician A says that an in-line six-cylinder diesel engine is usually longer and heavier than a V8 engine of the same displacement. Technician B says that there are twice as many teeth on the crankshaft as there are on the camshaft sprocket. Who is correct? and why? Technician A Technician B Both A and B Neither A nor Barrow_forwardExplain briefly 1. Valve lag 2. intake lagarrow_forwardHow many degrees of crankshaft travel until the intake valve open after ignition? (in degrees)arrow_forward
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