Briefly explain automotive ignition system, Electrical Engineering

Assignment Help:

Q. Briefly explain Automotive Ignition System?

Ignition systems in automobiles have been designed as a straightforward application of electrical transients. Figure shows a simplified ignition circuit for an internal-combustion engine. The primary inductance, current-limiting resistance, and capacitance forman underdamped series RLC circuit. Thus, when the points open, an oscillatory current flows through the primary, thereby inducing the required voltage in the secondary. The points form a switch, which opens and closes as the engine rotates, exactly at the instantwhen an ignition spark is needed by one of the cylinders. During the period when the points are closed, current builds up rather slowly in the primary winding of the coil, which consists of a pair of mutually coupled inductors, as shown in Figure. The current is interrupted rapidly when the points open. The resulting large rate of change of current induces a large voltage across the coil secondary, which is connected to the appropriate spark plug by the distributor. The resistance limits the current in case the engine stops with the points closed. Since the voltage across a capacitance cannot change instantaneously, the capacitor prevents the voltage

 across the points fromrising too rapidly when the points open. Otherwise arcingmay occur across the points, which in turn may get burned and pitted.

2168_Automotive Ignition System.png


Related Discussions:- Briefly explain automotive ignition system

Wireless and communication, With a maximum excess delay of and a chip durat...

With a maximum excess delay of and a chip duration of , the multipath components fall in delay bins. This means that we experience leakage of energy between chips and the channel i

Show that conservation of power is satisfied by the circuit, Given the netw...

Given the network in Figure, (a) Find the currents through resistors R 1 , R 2 , and R 3 . (b) Compute the voltage V 1 . (c) Show that the conservation of power is satisfi

UJT Help, What''s the formula for the VB2'' in a UJT?

What''s the formula for the VB2'' in a UJT?

Use of monitoring and control in nuclear and chemical plants, Use of Monito...

Use of Monitoring and control in nuclear and chemical plants In nuclear and chemical plants, there is generally a combination of control and monitoring taking place. Informatio

Limitor, What is limitor.. how it works

What is limitor.. how it works

How many electrons all semiconductor have in last orbit, All semiconductors...

All semiconductors in their last orbit have (A)  8 electrons.  (B) 2 electrons. (C)  4 electrons. (D)  6 electrons. Ans:     All semiconductors in their

Commercial fm radio broadcasting, Q. Commercial FM radio broadcasting? ...

Q. Commercial FM radio broadcasting? Commercial FM radio broadcasting utilizes the frequency band of 88 to 108 MHz for the transmission ofmusic and voice signals. The carrier

Air gaps, What is the main thing to look for in calculations of air gaps?

What is the main thing to look for in calculations of air gaps?

Transformer, how much transformer oil is used in transformers

how much transformer oil is used in transformers

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd