CRDI stands for common rail direct injection and directly injects fuel into engine cylinders via a single common rail connected to all fuel injectors. It was introduced to remove drawbacks of earlier fuel systems and allows even petrol engines to run with very lean fuel mixtures. The key components are a high pressure fuel pump, common rail, injectors, and engine control unit. CRDI provides benefits like 25% more power and torque, superior pickup, reduced noise and vibrations, and lower fuel consumption. While it has higher initial costs and maintenance than older systems, CRDI lowers emissions and improves engine performance.

1. Common Rail Direct
Injection Engine
Presented by:
manohar naidu
jagadeeshwara rao
hari krishna
bangaruraju and
sasikanthTEMP OF SPARKS

2. What is CRDI?
CRDI stands for common rail direct injection
meaning, direct injection of fuel into cylinders
of an engine via a single, common line, called
the common rail which is connected to all the
fuel injectors.
Instead of providing separate piston pumps for
fuel supply, the common rail alone supplies
high pressure fuel to each cylinder.

3. Principle of CRDI
Introduced to remove the drawbacks
of carbureted and MPFI systems.
Main advantage is that even petrol
engines can be run under very lean
mixture ratio of 50:1

5. CIRCUIT DIAGRAM:

7. Components of CRDI
• High pressure fuel pump
• common fuel rail
• Injectors
• Engine control units[ECU]

8. Named in Different
Companies
• Mercedes Benz
• Hyundai
• Tata
• Mahindra
• BMW,volvo
• Tata
• Suzuki
• Toyota
• CDI
• CRDI
• CR4
• CRDE
• D
• DICOR
• DDIS
• D-4D

9. ADVANTAGES
1. Delivers 25% more power and torque
2. Higher power output even at lower rpm
3. Offers superior pickup
4. Reduced noise and vibrations
5. Lower the fuel consumption
6. Improved performance…………..bla…..bla…..bla..
Mainly in INDIA, diesel is cheaper than petrol
this fact adds to the credibility of the CRDI
system

10. disadvantages
1. High cost due to high pressure pump and ECU
2. Higher maintenance
3. Costly spare parts

11. Applications
1. Perfectly suitable for all types of road cars with diesel
engines
2. Also used in marine and locomotives
3. Mainly this system has a hand to lower the pollution

12. conclusion
 Cuts fuel consumption by 20%
 Doubles the torque at low engine speed
 Increases power by 20%
 Reduction the noise and vibrations
 In emission,co2 is reduced by 20% and particle
emissions by 60%
 Finally, CRDI principle not only lowers fuel consumption
and also emissions possible; also provide more comfort
and is quieter than modern pre-combustion engines

13. THANK YOUWhen all of your wishes are granted ,many of your dreams will be destroyed .
Thank you manohar naidu as a part of this