Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 12, Problem 7RQ
To allow the engine to run on the Atkinson cycle, Toyota’s VVT-i system causes the-
- intake valve to open early
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two stroke engine performs ______________to complete one cycle
A.Compression & Power
B.Suction and discharge stroke
C. Power and exhaust stroke
D.Suction and Exhaust stroke
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Tech a says some Briggs engines use an easy spin or compression release to make engine starting easier. Tech b says the easy spin opens the intake valve slightly on start up. Who is correct?
While discussing GDI systems: Technician A says that this type of system allows engines to run at very lean air-fuel ratios and at higher-than-normal compression ratios. Technician B says that GDI systems eliminate the need to have an EGR valve on the engine. Who is correct?
Chapter 12 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 12 - Explain staged and continuously variable value...Ch. 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 - Which of the following is not true of knurling? It...Ch. 12 - True False? Fiats MultiAir system relies on...Ch. 12 - To allow the engine to run on the Atkinson cycle,...Ch. 12 - Prob. 8RQCh. 12 - To ensure proper seating of the valve, the valve...Ch. 12 - When checking valve fit, contact between the valve...
Ch. 12 - If the valve face and valve seat do not contact...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 - Which of the following statements is not true?...Ch. 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 - When fitting a freshly ground valve into a freshly...Ch. 12 - Technician A says off-square springs may cause...Ch. 12 - Technician A says it is not necessary to measure...Ch. 12 - Technician A uses a 30-degree stone for topping a...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:...
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- how does resurfacing the cylinder head of an ohc engine affect timing and what should be done when the head needs resurfacing?arrow_forwardI need help on answering these from the following question below: 1. you need to calculate the mass flow rate of air inducted to the engine 2. from your answer, in the question above, you need to determine the ratios of heat release in the flue gas and cooling water against input power for the engine 3. you need to discuss how emissions can be minimised with regards to the engine The question: A diesel engine is a type of internal combustion engine that uses compression ignitio to turn energy in diesel fuel to rotary mechanical energy. A four-stroke (i = 0.5 for fourstroke engine, stroke = 150 mm and revolution = 2100 min−1) diesel engine with 6 cylinders and an effective specific fuel consumption of 0.23 kg kW−1h−1 has an effective and indicated mean pressure of 9.2 bar and 6.8 bar, respectively, and a compression ratio of 17. The ambient temperature and pressure of the diesel engine is 30 ℃ and 1.017 bar, respectively, and the temperature of the exhaust gas is 650 ℃. The clearance…arrow_forwardWhich cooling method is used for mopeds and moter cycle?arrow_forward
- A 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_forwardWhile discussing GDI systems: Technician A says this type of system allows engines to run at very lean air fuel ratios and at higher than normal compression ratios. Texhnician B says that GDI systems eliminate the need to have an EGR valve on the engine. Who is correct?arrow_forwardCompletely answer. Write legibly. 1. What are the most commonly used STARTING SYSTEM in Diesel Power Plant, Explain each type on how it is being used to start the Deisel Engine.2. What are the Environmental Impacts in the operation of a Barge Type Diesel Power Plant and its Mitigated Measures. Explain each Impact.arrow_forward
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