Automotive Technology: A Systems Approach - With Manual and Access
6th Edition
ISBN: 9781305513235
Author: ERJAVEC
Publisher: Cengage
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Chapter 26, Problem 12RQ
True or False? The spark plug wire is eliminated in all coil-per-cylinder ignition systems to reduce maintenance and the chances of EMI and RFI.
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Chapter 26 Solutions
Automotive Technology: A Systems Approach - With Manual and Access
Ch. 26 - Explain how voltage is induced in a permanent...Ch. 26 - Explain why dwell time is important to ignition...Ch. 26 - Prob. 3RQCh. 26 - Explain how the plugs fire in a two-plug-per-coil...Ch. 26 - Explain the components and operation of a...Ch. 26 - Prob. 6RQCh. 26 - True or False? A spark plug with two ground...Ch. 26 - Why is high voltage needed to establish a spark...Ch. 26 - Prob. 9RQCh. 26 - Which of the following is a function of all...
Ch. 26 - Reach, heat range, and air gap are all...Ch. 26 - True or False? The spark plug wire is eliminated...Ch. 26 - Modern ignition cables contain fiber cores that...Ch. 26 - The magnetic field surrounding the coil in a...Ch. 26 - Which of the following electronic switching...Ch. 26 - Technician A says that a magneto resistive sensor...Ch. 26 - While discussing ignition systems: Technician A...Ch. 26 - While discussing ignition timing requirements:...Ch. 26 - While discussing secondary voltage: Technician A...Ch. 26 - Prob. 5ASRQCh. 26 - In El systems using one ignition coil for every...Ch. 26 - While discussing EI systems: Technician A says...Ch. 26 - While discussing El systems: Technician A says...Ch. 26 - Technician A says the switching device controls...Ch. 26 - While discussing spark plugs: Technician A says...
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- While discussing ignition systems: Technician A says that an ignition system must supply high-voltage surges to the spark plugs. Technician B says that the system must maintain the spark long enough to burn all of the air-fuel mixture in the cylinder. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardIn El systems using one ignition coil for every two cylinders: Technician A says that two plugs fire at the same time with the same voltage used by each spark plug. Technician B says that one plug fires in the normal direction (center to side electrode) and the other in reversed polarity (side to center). Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardTrue or False? A spark plug with two ground electrodes will provide two separate sparks when fired.arrow_forward
- While discussing waste spark EI systems: Technician A says that a spark plug with too wide of a gap can affect the firing of its companion spark plug. Technician B says that improper spark plug torque can cause an engine misfire. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardDi ignition systems are capable of producing higher electrical energy than the DIS ignition systems. true or falsearrow_forwardConsider the following statements relevant to the ignition system of SI engine: 1. Too small a dwell angle will lead to the burning of condenser and contact points. 2. Too small a dwell angle will result in misfiring. 3. Too large a dwell angle will result in burning of condenser and contact points. 4. Too large a dwell will result in mistiring. Which of these statements are correct?arrow_forward
- Title True or False? A spark plug with two ground electrodes will provide two separate sparks when fired.. Description True or False? A spark plug with two ground electrodes will provide two separate sparks when fired. Why is high voltage needed to establish a spark across the gap of a spark plug? List the advantages of having one ignition coil per cylinder. Which of the following is a function of all ignition systems? a. To generate sufficient voltage to force a spark across the spark plug gap b. To time the arrival of the spark to coincide with the movement of the engine’s pistons c. To vary the spark arrival time based on varying operating conditions d. All of the abovearrow_forwardWhile diagnosing the cause of high HC and O2 emissions: Technician A says that the HC may be elevated because of an ignition problem. Technician B says that the O2 may be elevated because of an ignition problem. Who is correct? a. Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forwardTechnician A says there is less heat energy in high octane gasoline and, therefore less power is genorated during combustion. Technician B says usung a higher octane gasoline than required will not produce more power inless the engine has a knock sensor that allows the system to adjust ignition timing to take advantage of the higher octane. who is correct?arrow_forward
- Modern ignition cables contain fiber cores that acts as a __________ in the secondary circuit to cut down on radio and television interferences and reduce spark plug wear.arrow_forwardAuto-ignition might occurs in spark ignition .4 engine at low engine speed because the flame velocity is slow and thus the burn time is long, this results in more time for .auto-ignition .True False O Spark ignition engine with high.5 compression ratio can be used with less possibility of auto-ignition by Increasing the inlet temperature Using low octane number fuel O Using high octane number fuel O Reducing the turbulence motion None of the above Cross-flow (in four stroke engine) from .6 cinlet to exhaust occurs the end of the exhaust stroke and the beginning of the induction stroke when O both valves are close the end of the exhaust stroke and the beginning of the induction stroke when O both valves are open At the end of the intake stroke and the beginning of the exhaust stroke when O both valves are open the end of the exhaust stroke and the beginning of the compression stroke O when both valves are openarrow_forwardWhile discussing spark plugs: Technician A says that too narrow of a spark plug gap can cause a rough idle and premature wear of the electrodes. Technician B says that a spark plug with the wrong reach can cause preignition. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forward
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