Quality and best engine provides better performance and boost our engines (vehicle's) efficiency. So it is better to follow a good engine management system.

2. INTRODUCTION
EMS is a type of electronic control unit that
controls the running of an engine by monitoring
the engine speed and ensure optimal engine
performance .
It also measures the exact quantity of fuel
required to start a engine.

3. Resource : http://www.economymufflerandbrake.com/

4. Resource :http://www.enginelogics.com/

5. Why Cars Need an EMS
•It is required for manage the
power train.
•Also it helps to maintain
proper coordination within
engine’s ignition system, fuel
injection system and emission
control.

6. Key Points of EMS
Electronic Fuel Injection System
Air Induction System/Control
Fuel Delivery System/Control
Electronic Control System
Electronic control unit
Fuel Injector sequential
Air flow sensor
Air temperature sensor
Throttle Position sensor (TPS)
Continue…..

7. Temperature sensor
Oxygen sensor
Idle air control valve(IACV)
MAP sensor
Knock Sensor
Engine Speed Sensor
Engine Oil Sensor
Crankshaft sensor
Camshaft Sensor and Multi-point fuel injection

8. Electronic Fuel Injection System
Determine the amount of fuel
to inject into the engine and
when to fire the spark plugs.
 Achieve the most horsepower
with the least amount of Fuel
Resource :http://www.mrn.com/

9. Electronic Fuel Injection System
Filter and measure the
air flow into the engine

10. Fuel Delivery System/Control
It helps to measure;
• Fuel Efficiency.
Emission Performance
Engine Tuning and many
more.

11. Electronic Control System
It helps to inject the
correct amount of fuel
at correct time and
speed

12. Electronic Control Unit
• It controls more than one
electric systems and sub-systems
in a motor vehicle.
• It helps in regulating and
maintaining the amount of
fuel and air the engine needs
to increase horsepower.

13. Fuel Injector Sequential
It’s a type of multi-port injection
system in which injection valve will
open just before the cylinder intake
valve opens.
It has the fast response time when
the driver makes a quick change.

14. Air flow sensor
An air flow meter is a device
that measures the actual
speed of the air flowing
through the engine in
different segments.

15. Air temperature sensor
It helps to measure the air
density for fuel mixture control
and to trim the air flow ratio
according to the airflow density.

16. Throttle Position sensor
This sensor is used to monitor the throttle
position of a car .
•This sensor moves with the throttle and
sends a voltage signal to the computer
indicating throttle angle and speed of
movement. The computer uses this data to
measure engine load, adjust timing, fuel
delivery etc.

17. Temperature sensor
Temperature
sensors include analog and
digital sensor ICs designed
for temperature monitoring
of a system

18. Oxygen sensor
It measures the proportion
of oxygen to fuel in the
engine.

19. Idle air control valve(IACV)
•The idle air control valve is
also known as idle speed
control valve; regulates the
idle speed of the engine

20. MAP sensor
This sensor measures
air pressure which tells
engine the current
altitude of a vehicle

21. Knock Sensor
The Knock Sensor detects
engine knock and sends a
voltage signal to the engine
and the engine uses that
signal to control the timing
.

22. Engine Speed Sensor
An engine speed sensor is
attached to crankshaft of car's
engine and it indicate the speed
that crankshaft is spinning. This
information is beneficial to
control both the ignition timing
and EMS.

23. Engine Oil Sensor
It measures the oil pressure inside
the engine and gives an alert in
case of any problem with oil
pressure.

24. Crankshaft sensor
It is used to monitor the position
and rotational speed of crankshaft
and these information will be
used by the EMS to control the
ignition system timing and other
engine parameters.

25. Camshaft Sensor
The Camshaft sensor determines
which cylinder is firing to
establish injector
synchronization and coil firing
sequence in DIS systems then
only crankshaft sensor set
ignition timing, supply the signal
and measure the speed.

26. Multi-point fuel injection
In this system each cylinder
has number of injectors to
supply/spray fuel in the
cylinders as compared to one
injector located centrally to
supply/spray fuel in case of
single point injection system.
Resource :http://automotivetechnology.yolasite.com/

27. THANK YOU
Source: http://www.stuttgartautoservice.com/