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 30, Problem 1CQ
Cylinder heads with four valves flow more air than those with two valves because they __________.
- a. have a greater open area
- b. use a higher lift camshaft
- c. increase the velocity of the air
- d. Both a and c
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Chapter 30 Solutions
Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
Ch. 30 - What is meant by the term crossflow head?Ch. 30 - Prob. 2RQCh. 30 - What is the recommended cylinder head...Ch. 30 - What are the advantages of using four valves per...Ch. 30 - How is valve stem-to-guide clearance measured?Ch. 30 - Cylinder heads with four valves flow more air than...Ch. 30 - Two technicians are discussing a Hemi engine....Ch. 30 - Technician A says that an Audi five-valve engine...Ch. 30 - The gasket surface of a cylinder head, as measured...Ch. 30 - A warped aluminum cylinder head can be restored to...
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- Tech a says that the push on the piston top during the power stroke is transferred to the crank shaft through the connecting rod. Tech b states that the power is transferred from the piston through the valve train to the camshaft. Who is correct?arrow_forwardQ1- Explain the duties of camshaft, distributor and alternator, which are among the engine partsarrow_forwardWhat is the main function of the camshaft? Outputs the power created from the piston Move the piston up/down Involved in timing the opening/closing of the intake/exhaust valves with the position of the piston Transfers linear motion from the piston to rotational motion which can then be used to produce workarrow_forward
- 6. A four stroke 4L Spark Ignition V8 engine runs at 4000 rpm. The compression ratio is 10. The engine is square with bore equals to stroke. Determine the following a. Cylinder bore and stroke b. Average piston speed c. Clearance volume per cylinderarrow_forwardTrue or False? The camshaft is always located in the engine block.arrow_forwardWhile 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_forward
- Q/ What is the number of crankshaft rotations during 3600 (R. P. M) in 1- Two-stroke engine 2- In the four-stroke enginearrow_forwardWhat is the rotational travel through which the intake valve is open? (in degrees)arrow_forwardth OHC engine affect valve timing and what should of an 5. M be done when the head needs resurfacing? 4. What usually causes warpage in an aluminum 2. Ho 3. Define valve margin. cylinder head? 5. What are the two ways pushrods can be checked for straightness? 6. True or False 1. True False? Fiat's MultiAir system relies on mechanical, hydraulic, and electronic technol- ogies. 2 True False? Camshaft straightness is checked using V-blocks and a feeler gauge? driel bonir Multiple Choice 1. Which of the following is not true of knurling? a. It is one of the fastest techniques for restor- ing the ID dimensions of a worn valve guide. b. It reduces the amount of work necessary to reseat the valve. C. It is useful for restoring badly worn guides to their original condition. d. Nondarrow_forward
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