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

Describe the uses of GPS map, Describe the uses of GPS map This is far...

Describe the uses of GPS map This is far safer because a driver of a vehicle doesn't have to consult maps while driving. It also removes error (for example going the wrong way

Cycloconverter scherbius drive - motor control , Cycloconverter  Scherbius...

Cycloconverter  Scherbius Drive In this  drive  instead of dual controlled used in link  scherbius  drive one  phase  controlled  line commutated cyclconverter is used. This

Illustrate working of direct-coupled amplifiers, Q. Illustrate working of D...

Q. Illustrate working of Direct-coupled Amplifiers? Direct-coupled Amplifiers : The following figure shows a direct-coupled amplifier consisting of two stages. A dc voltage i

Multiprogramming - single processor one users many program, Multiprogramm...

Multiprogramming - Single Processor one Users  Many  Programs When single  processor is  used to execute more than  one independent program simultaneously the technique  is ca

Determine the maximum power, Determine the maximum power: 1 For the c...

Determine the maximum power: 1 For the circuit shown below, what value of RL will result in maximum power transfer? Determine the maximum power dissipated in RL. You

Evaluate complex power in power system, Q. Evaluate complex power in power ...

Q. Evaluate complex power in power system? The complex power ¯S in a single-phase systemis the complex sum of the real (P) and reactive (Q) power, expressed as follows:

Discuss some features of pentium series of microprocessors, Discuss some fe...

Discuss some features of Pentium series of microprocessors. The Pentium is a CISC microprocessor, 32-bit superscalar.  The term superscalar is utilized for the processor that

Difference, Difference between bootstrip sweep circuit and Miller sweep ci...

Difference between bootstrip sweep circuit and Miller sweep circuit

Determine efficiency and form factor, Q Consider a three-phase, full-wave b...

Q Consider a three-phase, full-wave bridge recti?er, as shown in Figure, with a purely resistive load R. For each diode, determine: (i) efficiency, (ii) form factor, (iii) ripple f

Engineer, explain the alphanumeric codes

explain the alphanumeric codes

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