fuel injection and ignition

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TECHNICAL SEMINAR TECHNICAL SEMINAR TOPIC : TOPIC : FUEL INJECTION AND FUEL INJECTION AND IGNITION IGNITION

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Page 1: Fuel Injection and Ignition

TECHNICAL SEMINARTECHNICAL SEMINAR

TOPIC :TOPIC :FUEL INJECTION AND FUEL INJECTION AND

IGNITIONIGNITION

Page 2: Fuel Injection and Ignition

CONTENTS :CONTENTS : INTRODUCTION :INTRODUCTION :

CONSTRUCTION AND WORKING :CONSTRUCTION AND WORKING : A)FUEL INJECTION SYSTEMA)FUEL INJECTION SYSTEM B)FUEL IGNITION SYSTEMB)FUEL IGNITION SYSTEM

TYPES : TYPES : C)FUEL INJECTIONC)FUEL INJECTION D)FUEL IGNITIOND)FUEL IGNITION

MODERN DAY APPLICATIONS :MODERN DAY APPLICATIONS : CONCLUSION :CONCLUSION :

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INTRODUCTION :INTRODUCTION :

A)FUEL INJECTION :A)FUEL INJECTION : Fuel injection is a system for mixing fuel with air in Fuel injection is a system for mixing fuel with air in

an Internal Combustion Engine.an Internal Combustion Engine. It has become the primary fuel delivery system used It has become the primary fuel delivery system used

in gasoline automotive engines, having almost in gasoline automotive engines, having almost completely replaced carburetors in the late 1980s.completely replaced carburetors in the late 1980s.

With the advent of electronic fuel injection (EFI), the With the advent of electronic fuel injection (EFI), the diesel and gasoline hardware has become similar.diesel and gasoline hardware has become similar.

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The primary difference between carburetors and fuel The primary difference between carburetors and fuel injection is that fuel injection atomizes the fuel by injection is that fuel injection atomizes the fuel by forcibly pumping it through a small nozzle under high forcibly pumping it through a small nozzle under high pressure, while a carburetor relies on low pressure pressure, while a carburetor relies on low pressure created by intake air rushing through it to add the created by intake air rushing through it to add the fuel to the airstream.fuel to the airstream.

One of the first commercial fuel injection systems was One of the first commercial fuel injection systems was a mechanical system developed by a mechanical system developed by BoschBosch and and introduced in 1955 on the Mercedes-Benz 300SL.introduced in 1955 on the Mercedes-Benz 300SL.

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B)FUEL IGNITION :B)FUEL IGNITION : Fuel ignition is one of the important feature in an Fuel ignition is one of the important feature in an

engine operating system.engine operating system. The operation and efficiency of an internal The operation and efficiency of an internal

combustion (IC) engine is strongly linked to its combustion (IC) engine is strongly linked to its ignition timing.ignition timing.

It is mainly done by the usage of It is mainly done by the usage of spark plugsspark plugs in case in case of petrol engine ,while in case of a diesel engine the of petrol engine ,while in case of a diesel engine the charge is charge is compressedcompressed and ignited. and ignited.

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CONSTRUCTIONCONSTRUCTION AND WORKING :AND WORKING :

A)FUEL INJECTION :A)FUEL INJECTION :

The fuel injector is only a nozzle and a valve: the The fuel injector is only a nozzle and a valve: the power to inject the fuel comes from a pump or a power to inject the fuel comes from a pump or a pressure container farther back in the fuel supply.pressure container farther back in the fuel supply.

The functional objectives for fuel injection systems The functional objectives for fuel injection systems can vary.can vary.

All share the central task of supplying fuel to the All share the central task of supplying fuel to the combustion process, but it is a design decision how a combustion process, but it is a design decision how a particular system will be optimized.particular system will be optimized.

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FUEL INJECTORFUEL INJECTOR

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TYPES OF FUEL INJECTION :TYPES OF FUEL INJECTION :

Multi-point fuel injection:Multi-point fuel injection: Multi-point fuel Multi-point fuel

injection injects fuel injection injects fuel into the intake port just into the intake port just upstream of the upstream of the cylinder's intake valve, cylinder's intake valve, rather than at a central rather than at a central point within an intake point within an intake manifold.manifold.

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Turbocharged Direct Turbocharged Direct Injection(TDI):Injection(TDI): The engine uses direct injection where a fuel injector The engine uses direct injection where a fuel injector

sprays atomised fuel directly into the main sprays atomised fuel directly into the main combustion chamber of each cylinder, rather than the combustion chamber of each cylinder, rather than the pre-combustion chamber prevalent in older diesels pre-combustion chamber prevalent in older diesels which used indirect injection. which used indirect injection.

The engine is coupled with a turbocharger to The engine is coupled with a turbocharger to increase the amount of air going into the engine increase the amount of air going into the engine cylinders, and an intercooler to lower the cylinders, and an intercooler to lower the temperature (and therefore increase the density) of temperature (and therefore increase the density) of the air from the turbo, thereby increasing the amount the air from the turbo, thereby increasing the amount of fuel that can be injected and combusted.of fuel that can be injected and combusted.

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ADVANTAGES:ADVANTAGES:

These, in combination, allow for greater engine These, in combination, allow for greater engine performance. performance.

It also decreases emissions.It also decreases emissions. Provides more torque than its petrol engined Provides more torque than its petrol engined

counterpart.counterpart. The reduced material volume of the direct injection The reduced material volume of the direct injection

diesel engine reduces heat losses.diesel engine reduces heat losses.

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A direct injection engine is also easier to start when A direct injection engine is also easier to start when cold, due to more efficient placing and usage of cold, due to more efficient placing and usage of glowplugs.glowplugs.

Thereby increases engine efficiency, at the expense of Thereby increases engine efficiency, at the expense of increased combustion noise.increased combustion noise.

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B)TYPES OF FUEL IGNITION:B)TYPES OF FUEL IGNITION:

Digital Twin Spark Plug Ignition (DTS-i):Digital Twin Spark Plug Ignition (DTS-i):

DTS-i was first introduced in the Pulsar 150/180 DTS-i was first introduced in the Pulsar 150/180 models in 2003.models in 2003.

DTS-iDTS-i stands for stands for DDigital igital TTwin win SSpark Plug park Plug IIgnition. gnition. In simple words it means that there are 2 spark plugs In simple words it means that there are 2 spark plugs in the single cylinder engine and the timing of in the single cylinder engine and the timing of sparkplugs are controlled by a digital sparkplugs are controlled by a digital microprocessor.microprocessor.

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ADVANTAGES:ADVANTAGES: The big difference between a conventional 4 stroke engines The big difference between a conventional 4 stroke engines

and the DTS-i engine is the incorporation of 2 Spark Plugs.and the DTS-i engine is the incorporation of 2 Spark Plugs.

The 2 spark plug set up leads to better burning of the air fuel The 2 spark plug set up leads to better burning of the air fuel mixture, which results in delivering better fuel efficiency mixture, which results in delivering better fuel efficiency without any compromise in power.without any compromise in power.

With a DTS-i engine, one gets the dual benefit of good fuel With a DTS-i engine, one gets the dual benefit of good fuel coupled with good power as well. coupled with good power as well.

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The evidence of the The evidence of the effectiveness of this effectiveness of this technology is clearly technology is clearly demonstrated by the demonstrated by the eagerness of other eagerness of other manufacturers like Royal manufacturers like Royal Enfield, which have Enfield, which have launched a model, the launched a model, the Thunderbird “Twin Spark”. Thunderbird “Twin Spark”.

Page 19: Fuel Injection and Ignition

Digital Twin Spark Swirl InductionDigital Twin Spark Swirl Induction (DTS-Si):(DTS-Si):

Like the DTS-i engine, the DTS-Si engine also has 2 Like the DTS-i engine, the DTS-Si engine also has 2 Spark Plugs, the timing of which is controlled by a Spark Plugs, the timing of which is controlled by a Digital Microprocessor. Digital Microprocessor.

The difference between these two engines is the offset The difference between these two engines is the offset position of the inlet and outlet ports of the DTS-Si position of the inlet and outlet ports of the DTS-Si engine.engine.

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Effect of DTS-SiEffect of DTS-Si

This offset position creates This offset position creates turbulence of the air-fuel turbulence of the air-fuel mixture inside the engine.mixture inside the engine.

Benefits of DTS-Si Benefits of DTS-Si Technology: This enhances Technology: This enhances the fuel efficiency of the the fuel efficiency of the engine even further.engine even further.

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Conclusion:Conclusion: As I have discussed the functions of fuel injection and As I have discussed the functions of fuel injection and

ignition and some of their types which are in common ignition and some of their types which are in common use nowadays, these technologies have revolutionized use nowadays, these technologies have revolutionized automobiles to a great extent.automobiles to a great extent.

We also have a need to fully utilize the resources We also have a need to fully utilize the resources available without polluting the atmosphere.available without polluting the atmosphere.

These reasons have paved way for inventions like the These reasons have paved way for inventions like the above mentioned ones.above mentioned ones.

Page 22: Fuel Injection and Ignition

Interesting factsInteresting factsThe Intel® Chopper This Intel-themed concept motorcycle was designed

and built by Orange County Choppers* A rugged,detachable, ultra-mobile PC (UMPC)

drives the bike's technical and control systems. This all-digital dashboard also functions like a

traditional PC, capable of supporting common desktop applications like email, web browsing, etc.

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Features:Features: Computerized features on the bike include: Ignition system controlled by fingerprint recognition

software. Sunlight-viewable, touch-screen digital dashboard. USB camera in place of standard rear-view mirrors. Electronically controlled hydraulic kickstand. Integrated audio and video systems. Wireless connectivity including Bluetooth*, Wi-Fi,

and GPS.

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THANK YOU!!!THANK YOU!!!