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Department of Mechanical Engineering
Kamla Nehru Institute of Technology, Sultanpur
Date: September10,2013
CERTIFICATE
This is to certify that Mr. DEEPAK SAXENA has successfully
delivered aseminar on the topic AIR SUSPENSION SYSTEMfor partial
fulfillment of
the requirement for the award of Bachelor of Technology degree
in Mechanical
Engineering from Gautam Buddh Technical University, Lucknow.
Mr. TP Srivastava Mr. Anil Kumar
(Associate Professor) (Asstt. Professor)
Seminar In-charge
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ABSTRACT
The answer to current air pollution is mainly vehicles and
industries. Leaving industries
apart, vehicles release a large amount of polluting gases daily
into the environment. This
pollution needs to be reduced.
Transportation today is mainly based on either diesel or
gasoline. Diesel is a less
volatile fuel as compared to petrol. Diesel powered vehicles
release less amount of carbon
dioxide, carbon monoxide and nitrogen dioxide as compared to the
gasoline powered. Diesel
engines involve injection system and gasoline engines involve
fuel mixing with air and then
supply to combustion chamber i.e. carburetion system.
With the rising problems of carburetion like back firing,
unevenly composed
fuel supply, surging of fuel, etc has led to its obsolete use.
Today the gasoline powered
vehicles also use injection system. They are either direct
injection or indirect injection. This
way fuel was less wasted and quite much efficiently
utilized.
To control pollution catalytic converters were used. It treated
the exhaust gases and
absorbed upto 80% of the harmful gases. Then came the Electronic
Fuel Injection systems.
This not only injects the fuel in a very precise manner but also
controls the emission of
exhaust gases. With the help of various sensors like exhaust
oxygen sensor, speed sensor,
throttle valve control, coolant temperature sensor, etc and the
ECU it has become easier to
control engine functions.
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i
CONTENTS
Certificate. (i)
Abstract (ii)
Contents.... (iii)
1. Introduction... 1
2. History of fuel injection...........................2
3. Why EFI ? .... 4
4. Fuel delivery system in EFI............5
5. Air induction system in
EFI.......................................................................................8
6. Sensors used in EFI.... 10
7. Electronic Control Unit.....14
8. Working of EFI system..15
9. Advantages of EFI system..17
10. Disadvantages of EFI system.17
11. Recent advancement...18
12. Applications....19
13. References.. 21
