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

Explain the voltage regulation, Explain the Voltage Regulation? The per...

Explain the Voltage Regulation? The percent of voltage regulation of a generator is defined as the ratio of the change in voltage from no-load to full-load to the full-load vol

Obtain plots by using probe, Q. A dc source is connected to a series RLC ci...

Q. A dc source is connected to a series RLC circuit by a switch that closes at t = 0, as shown in Figure, with initial conditions. For the values of R = 20, 40, and 80 , solve for

Differential amplifier, Ask question #Minimum 100 words What is neeed of d...

Ask question #Minimum 100 words What is neeed of differential amplifier

Product of two sinsoids, Connect the two signals used in section 2 above to...

Connect the two signals used in section 2 above to the "Multiplier" module. Make sure that you record the amplitude of each signal. Observe and record the resultant waveform in

Direct 3-bit binary decoding, Q. A table for the direct 3-bit binary decodi...

Q. A table for the direct 3-bit binary decoding is given. Show a block diagram for a 3-to-8 decoder and suggest a method for its implementation.

What do you understand by detroit-type automation, (a) What do you understa...

(a) What do you understand by Detroit-type automation? (b) What are the situations under which the above kind of automation can be planned ?

Illustrate the basic working of modem, Q. Illustrate the basic working of M...

Q. Illustrate the basic working of Modem? Modem: Modems are generally provided by network operators or by vendors who aren't necessarily the manufacturers of computer systems.

Ac, power factor improvement

power factor improvement

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