Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 12, Problem 2MC
To allow the engine to run on the Atkinson cycle, Toyota’s VVT-i system causes the-
- intake valve to open early
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
The gas/oil mixture used in a two stroke engine has been properly mixed. The carburetor high speed & cruise circuit is adjusted to lean. Tech a says that the lean adjustment may cause the engine to fail due to improper lubrication: tech b says that it may cause the engine to fail because of overheating. Who is correct?
C- Fill the blank
1- Internal combustion engines classified according to air intake into the cylinder to
and--
2- Typical compression ratio for modern gasoline engine lie between
3- There are a number of gasoline additives that are used to raise the octane number such as
4- Higher compression ratio in SI engine lead to
5- The thermal efficiency of CI engine is
than of SI engine.
6- Fuel with octane number of 78 indicate 78%-
-and 22%-
7- Anti-Knock quality improves with -
no. of carbon atoms.
8- Higher compression ratio in SI engine lead to
9- Maximum power overtaking a vehicle or climbing up a hill (extra load) this requires a
mixture.
is it true that an l head engine has the intake and exhaust valves mounted in the cylinder head
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...
Knowledge Booster
Learn more about
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
- Which of the following is not one of the strokes of a four-cycle engine? Compression Exhaust Intake Ignitionarrow_forwardTech 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?arrow_forwardWhile 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?arrow_forward
- List three alternative fuels for an internal combustion engine and briefly explain where they come from.arrow_forwardWhat defines the combustion chamber of afour-stroke engine?arrow_forwardDiscuss briefly the fuel injection system and carburetor system for SI-internal combustion engine.arrow_forward
- Explain the Four - Stroke Cycle Engine Intake Compression Power Exhaustarrow_forwardWhat is the range of operating AFR in gasoline engines?arrow_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
- While 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_forwardDiscuss the main functions of the lubricating system of an enginearrow_forwardWhile discussing the compression ratios used with engines equipped with a GDI system: Technician A says that higher ratios can be used because ignition timing is normally very advanced. Technician B says that higher ratios are possible because the small droplets of fuel injected directly into the cylinder tend to cool the mixture in the cylinder. Who is correct?a.tech a b.tech b c. Both a and b d. Neither a nor barrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Automotive Technology: A Systems Approach (MindTa...Mechanical EngineeringISBN:9781133612315Author:Jack Erjavec, Rob ThompsonPublisher:Cengage Learning
Automotive Technology: A Systems Approach (MindTa...
Mechanical Engineering
ISBN:9781133612315
Author:Jack Erjavec, Rob Thompson
Publisher:Cengage Learning
The Refrigeration Cycle Explained - The Four Major Components; Author: HVAC Know It All;https://www.youtube.com/watch?v=zfciSvOZDUY;License: Standard YouTube License, CC-BY