FIELD OF INVENTION
This invention relates to improved engine with twin fuel injection
system.
BACKGROUNDIPRIOR ART OF THE INVENTION
Diesel emission regulation continues to be followed worldwide,
necessitating diesel engines with least possible emissions.
The' four stroke Compression Ignition engine operates at a much
higher compression ratio. In diesel engine during suction stroke, air is
induced. Due to the high compression ratio, the temperature at thc
end of the compression stroke is sufficiently high to self ignite the fuel
which is injected into the combustion chamber by single injector per
cylinder. In CI engines, a high pressure fuel pump and an injector per
cylinder are provided to inject the fuel into the combustion chamber.
In exhaust stroke, burnt gases flow from cylinder to manifold.
However, it is associated with the disadvantage(s) of unstable
combustion and high emission.
The' Existing Layout of engine Assembly is shown in fig. 1, in which it
can be seen that Cylinder Assembly is fitted on the block assembly.
Again, the Fitment Layout Injector arrangement is shown in fig. 2. I n
CI engines, a high pressure fuel pump and an injector per cylinder ar::
provided to inject the fuel into the combustion chamber which results
powcr out. In this, single injector is used to inject an amount of fuel in
cavity for a particular duration.
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OBJECTS OF THE INVENTION
The primary object of the present invention is to provide improvcci I . .
engine with twin fuel injection system which improves the Specific
. .
Fuel Consumption.
Another object of the present invention is to provide improved engine
with twin fuel injection system which causes fast response of enginc.
Further object of the present invention is to provide improved criginc
with twin fuel injection system which leads to improvement in Cold
Startibilty .
Still another object of the present invention is to provide improvcd
engine with twin fuel injection system, which leads to Long life cf
. .
Engine parts such as piston, Piston rings and valves.
Yet another object of the present invention is to provide improved
engine with twin fuel injection system which results in Power output.
Yet another object of the present invention is to provide improved
engine with twin fuel injection system which reduces the Injectior?
Time.
Yet another object of the present invention is to provide improvcd
engine with twin fuel injection system which reduces emission of
particulate material.
Yet another object of the present invention is to provide improved
engine with twin fuel injection system which results in faster an6
better combustion.
SUMMARY OF THE INVENTION
According to this invention, there is provided an improved engine with
twin fuel injection system comprising of cylinder head with injector
assembly for spraying fuel into piston cavity of piston, pin of which is
connected to small end of connecting rod, wherein the injector
assembly is two in number.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS:
Further objects and advantages of this invention will be morc
apparent from the ensuing description when read in conjunctior, with
the accompanying drawing and wherein:
Fig. 1 shows: conventional layout of engine assembly.
Fig. 2 shows: conventional layout of injector arrangement on cylinder.
Fig. 3 shows: twin fuel injection system in accordance with thc
present invention.
DETAHLED DESCRIPTION OF THE INVENTION WITH REFERENCE
TO ACCOMPANYING DRAWINGS:-
The present invention is directed to improved engine with twin iuc':
injection system. Now, reference may .be made to fig. 3, whercir;
cylinder head (1) is provided with injector assembly (2) for supplying
fuel such as diesel into piston cavity (3) of piston (4) for ignition to
take place.
The supply of fuel is carried out by means of spraying (5). Said piston
is accommodated inside liner (6).
Piston pin (7) of the piston is connected to small end of connecting rod
(8), big end of which is connected to crank shaft of engine block.
In the present invention, injector assembly is two in number as
shown. A high pressure fuel pump and two injectors per cylinder arc
provided to inject the fuel into the combustion chamber resulting in
power out.
With the provision of two injectors, same amount of fuel car1 bc
injected in cavity, which reduces the injection duration.
Fuel is injected through two injectors per cylinder, that results in
Complete Combustion hence Increased Power and Reduction in the
Injection Time.
Further, the above provision reduces the diameter of the fuel droplcts
which results in smoother and more stable combustion with
improvement in fuel efficiency.
Advantageous features
- Reduction in injection duration.
- Complete combustion, which results in increased power and
reduction in injection time.
- Reduction in diameter of the fuel droplets, which leads to
smoother and more stable combusti.on with improved fuei
efficiency
It is to be noted that the present invention is susceptible to
modifications, adaptations and changes by those skilled in thc art.
Such variant embodiments employing the concepts and features of
this invention are intended to be within the scope of the present
invention, which is further set forth under the following claims.

Claims
1. An improved engine with twin fucl injection systcm comprisi~g
of cylindera head with injector assembly for spraying fuel into
piston cavity of piston, pin of which is connected to small end of
connecting rod, wherein the injector assembly is two in numbcr.
2. An improved engine as claimed in claim 1, wherein high
pressure fuel pump and two injectors per cylinder are providcd
to inject fuel into the combustion chamber.
3. An improved engine as claimed in claim 1 or 2, is associated
with the advantageous features such as herein dcscribcd.
4 . A n improved engine with twin fuel injection system
substantially as herein described with refcrcnce to thc
"
accompanying drawings.