FORM 2
THE PATENTS ACT 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
COMPLETE SPECIFICATION
(See Section 10; rule 13)


TITLE OF THE INVENTION
Improved Accelerator control system and method of assembling thereof
APPLICANT
TATA MOTORS LIMITED, an Indian company
Having its registered office at Bombay House,
24 Homi Mody Street, Hutatma Chowk,
Mumbai 400 001 Maharashtra, India
INVENTORS
Shasi kanth Khanna, Amar Rao. Ran Bijay Singh and Sandeep Gosh
all Indian Nationals of TATA MOTORS LIMITED,
an Indian company having its registered office at
Bombay House, 24 Homi Mody Street, Hutatma Chowk,
Mumbai 400 001 Maharashtra, India
PREAMBLE TO THE DESCRIPTION
The following specification particularly describes the invention and the manner in
which it is to be performed.

FIELD OF INVENTION
The present invention is related to the accelerator control system for vehicles and more particularly it relates to improved accelerator control system for vehicles and method of assembling thereof.
BACKGROUND OF INVENTION
Generally accelerator control system consists of accelerator pedal connected to assembly accelerator shaft through accelerator thrust rod which is further connected to assembly accelerator lever through pull rod. Further this pull rod is connected to FIP (fuel injection pump).
Conventionally in the vehicle, the stopper is provided below the pedal for controlling the travel of accelerator pedal.
On of the problem associated with the existing /conventional accelerator control system is that said accelerator control system has a long pull rod, due to which, the pressure on FIP (fuel injection pump) is more and the resultant force on accelerator pedal becomes more. Further the manipulation of travel of accelerator pedal is required and this also affects the fuel economy.
OBJECT OF THE INVENTION
The main object of the present invention is to provide an improved accelerator control system for vehicles.

Another object of the present invention is to provide a method of assembling improved accelerator control system for vehicles.
Another object of the present invention is to provide an improved accelerator control system for vehicles which is simple in construction,
Yet another object of the present invention is to provide an improved accelerator control system for vehicles which is less in weight and cost effective.
Yet another object of the present invention is to provide an improved accelerator control system for vehicles which improves a better fuel economy of vehicle.
BRIEF DESCRIPTION OF INVENTION
In accordance with the present invention, an improved accelerator control system for vehicles comprises; accelerator pedal (1) connected to accelerator bracket (T) with the help of split pin (1"), said accelerator bracket (T) is mounted on fire wall (2'), accelerator thrust rod (2) connected to accelerator pedal by angle bracket (3) at one end and at other end connected to a lever (4) in the accelerator shaft assembly, wherein said accelerator shaft assembly having at least two lever members (5,5'), at least one shaft (6) , one tube (7) connected with each other by welding and nut bolt arrangement,
Accelerator lever assembly is provided for connecting said pull rod (8) from fuel injection pump ( FIP) and accelerator shaft assembly,
Accelerator bracket assembly is provided to reduce the length of the pull rod,

Two pull rods (8,8') connected with each other by shaft, at both end spring washer (9) and locking rings (10) are provided. Wherein first pull rod (8) is connected to FIP and said accelerator lever assembly. Second pull rod (8') connected to a lever (11) of said accelerator lever assembly and a lever (4) of accelerator shaft assembly.
In accordance with further embodiment of the present invention, method of assembling improved accelerator control system comprising the steps of;
• Mounting accelerator pedal on accelerator bracket
• Connecting said pedal to accelerator shaft assembly,
• Connecting accelerator shaft assembly with accelerator lever assembly,
• Mounting accelerator lever assembly on accelerator bracket assembly,
• Connecting Accelerator bracket assembly to fuel injection pump (FIP) through said pull rod,
DETAILED DESCRIPTION OF INVENTION
Referring now to the drawings wherein the showings are for the purpose of
illustrating a preferred embodiment of the invention only, and not for the purpose of
limiting the same,
Figure-01 shows front view of accelerator lever assembly
Figure-02 shows side view of accelerator lever assembly
Figure-03 shows accelerator bracket assembly
Figure-04 shows first lever of accelerator assembly
Figure-05 shows pull rod assembly
Figure-06 shows accelerator shaft assembly
Figure-07 shows second lever of accelerator shaft assembly
Figure-08 shows side view of accelerator linkage assembly
Figure-09 shows top view of accelerator linkage assembly

Now referring to figure-01 and 02 which shows Accelerator lever assembly, said accelerator lever assembly is provided for connecting said pull rod from FIP (fuel injection pump) and assembly accelerator shaft , said Accelerator lever assembly consist of at least three levers (12,13,14) connected inline by cylindrical member (15). Said cylindrical member (15) is disposed inside hollow tube (16). The said three levers (12,13,14) are mounted on said hollow tube (16) at predetermined distances, preferably by welding. There is a relative motion between the said cylindrical member and said hollow tube
Refer to figure-03, Accelerator bracket assembly is provided to reduce the length of the pull rod , said accelerator bracket assembly consist of bracket member (17) having at least two bosses (18) connected to said bracket member (17), one stopper (19) provided on said bracket member , one rib (20) also provided on said bracket member for reinforcement.
Refer to figure-02, 05, 08 and 09, said pull rods comprises; spring washer (9) and locking rings (10) at both ends. Wherein first pull rod (8) is connected to FIP and lever (13) of said accelerator lever assembly. Second pull (8') rod connected to a lever (11) of said accelerator lever assembly and a lever (4) of accelerator shaft assembly.
Now referring figure -01, 03 which shows accelerator lever assembly and accelerator bracket assembly respectively and figure-08 and 09 which shows the interconnection of said accelerator lever assembly and accelerator bracket assembly in the accelerator linkage assembly, wherein Said accelerator lever assembly is connected to said accelerator bracket assembly with the help of extended member of said hollow tube (16) which is disposed in the hole provided on the said accelerator bracket assembly.

Referring to figure-06 which shows accelerator shaft assembly, said accelerator shaft assembly consist of at least two lever members (5,5'), at least one shaft (6), one tube (7) connected with each other by welding and nut bolt arrangement. Said two lever members are connected with said shaft .
The assembly of said accelerator pedal control system includes; the said accelerator pedal is mounted on said accelerator bracket. Said pedal is connected to accelerator shaft assembly by thrust rod. Said accelerator shaft assembly is connected to said accelerator lever assembly by said first pull rods. Accelerator lever assembly is mounted on said accelerator bracket assembly through the holes provided on said bracket assembly and cylindrical members disposed inside the said hollow tube of said accelerator lever assembly. Said accelerator bracket assembly is connected to fuel injection pump (FIP) by second pull rod and lever of said accelerator lever assembly.
In accordance with this invention Method of assembly comprising the step of:
• Mounting accelerator pedal on accelerator bracket,
• Connecting said pedal to accelerator shaft assembly by said thrust rod.
• Connecting accelerator shaft assembly with accelerator lever assembly by said first pull rod,
• Mounting accelerator lever assembly on accelerator bracket assembly through the holes provided on said bracket assembly and cylindrical members disposed inside the said hollow tube of said accelerator lever assembly,
• Accelerator bracket assembly is connected fuel injection pump (FIP) through pull rod and lever of said accelerator lever assembly.
The foregoing description is a specific embodiment of the present invention. It should be appreciated that this embodiment is described for purpose of illustration

only, and that numerous alterations and modifications may be practiced by those skilled in the art without departing from the spirit and scope of the invention. It is-intended that all such modifications and alterations be included insofar as they come within the scope of the invention as claimed or the equivalents thereof

WE CLAIM
1. An accelerator control system for vehicles comprising:
an accelerator pedal connected to an accelerator shaft assembly by a thrust rod, said accelerator shaft assembly having at least two lever members, and at least one shaft member and tube member connected with each other;
an accelerator lever assembly comprising a plurality of levers connected inline by a cylindrical member disposed inside a hollow tube;
a first pull rod connected to a fuel injection pump and one of said levers of said accelerator lever assembly;
a second pull rod connected to one of said levers of said accelerator lever assembly and a member of said accelerator shaft assembly;
an accelerator bracket assembly having a bracket member with at least two bosses and at least one stopper provided thereon; wherein said accelerator lever assembly is connected to said accelerator bracket assembly by an extended member of said hollow tube disposed in an aperture provided on the said accelerator bracket assembly.
2. The accelerator control system as claimed in claim 1, wherein said first and second pull rods comprises a spring washer and locking rings at both ends.
3. The accelerator control system as claimed in claim 1, wherein said accelerator bracket assembly is provided to reduce the length of said first pull rod.
4. The accelerator control system as claimed in claim 1, wherein said accelerator lever assembly comprises at least three levers mounted on said hollow tube at predetermined distances, preferably by welding.

5. The accelerator control system as claimed in claim 1, wherein a rib member is provided on said bracket member of said accelerator bracket assembly for reinforcement.
6. A method as assembling the accelerator control system as claimed in claims 1 to 5 comprising the steps of:
mounting said accelerator pedal on an accelerator bracket;
connecting said accelerator pedal to said accelerator shaft assembly by said thrust rod;
connecting accelerator shaft assembly with accelerator lever assembly by said first pull rod;
mounting accelerator lever assembly on said accelerator bracket assembly through apertures provided on said bracket assembly and on cylindrical member disposed inside said hollow tube of said accelerator lever assembly; and
connecting said accelerator bracket assembly to said fuel injection pump through first pull rod and a lever of said accelerator lever assembly.

7. An accelerator control system for vehicles as hereinabove described with reference to the accompanying drawings
8. A method as assembling the accelerator control system as hereinabove described with reference to the accompanying drawings