This patent search and analysis report summarizes a granted Indian patent for a device that controls overspeeding of automobiles. The device receives engine speed signals and compares it to a preset maximum speed. If the speed is exceeded, it causes misfires in cylinders to reduce power and below the limit, it restarts fuel supply. The invention allows control of high speeds and improves safety. It can be used with carbureted engines running on alternate fuels like CNG and LPG.

1. Date : 06-Sep-2013
Patent Search & Analysis Report (PSAR)
Part-1 : Patent Search Technique Used
Part-2 : Basic data of Patent and Bibliographic
Team Id : 1300015602
Name : 1234567890 - GIC
Patent Search Database Used : Indian Patent Office Database
Keywords used for search : Automobile,Speeding,Control,Carbureted
engine, Device, CAR, BIKE, TRUCK
Search String : OVERSPEEDIN AND CONTROL AND
AUTOMOBILE
Number of Results/Hits getting : 3
Category / Field of Invention : Automobile Engineering
Invention is related to/Class of
Invention :
Speed Control
Title of Invention : Device for Controlling Over speeding of
Automobiles
Patent No : 227873
Application No : 2031/MUM/2006
Date of Filing/Application : 2006-12-12
Priority Date : 2006-12-12
Publication /Journal Number - (Issue
No. of Journal in which patent is
published) :
10/2009
Publication Date : 2009-03-06
First Filled Country : India
Also Published in:
Relevant Patent / Application No :
Applicant for Patent is : Organization

2. Inventor Details
Applicant Details
Sr
No
Name Address City Country
1 . Purva Oza LD College Of
EngNavaragpuraAhmedaba
dIndia
Ahmedabd India
2 . Purva Oza LD College Of
EngNavaragpuraAhmedaba
dIndia
Ahmedabd India
3 . Purva Oza LD College Of
EngNavaragpuraAhmedaba
dIndia
Ahmedabd India
4 . Purva Oza LD College Of
EngNavaragpuraAhmedaba
dIndia
Ahmedabd India
Sr
No
Name Address City Country
1 . TATA Motors
Limited
Bombay House, 24Homi
Mody Street,Hutatma
Chowk,Mumbai
400001Maharashtra, India
Mumbai India

3. Part-3 : Technical part of patented invention
Carbureted engines do not have speed control unit as an integral part of their design as seen in multipoint fuel
injection engines and diesel engines. Carbureted engines now find applications with alternate fuels such as
CNG and LPG and so their use in public domain is increases day by day. So by this kind of inventions high
speed engines and highly offensive driving practice practiced by many city drivers can be controlled.
Maximum speed limit and speed control of vehicles become an essential and lifesaving feature.
Carbureted engines do not have speed control unit as an integral part of their design as seen in multipoint fuel
injection engines and diesel engines. Carbureted engines now find applications with alternate fuels such as
CNG and LPG and so their use in public domain is increases day by day.
So by this kind of inventions high speed engines and highly offensive driving practice practiced by many city
drivers can be controlled. Maximum speed limit and speed control of vehicles become an essential and
lifesaving feature.
The air and fuel quantity supplied to the engine governs the speed of the engine and that of the vehicle. The
butterfly valve operated by the throttle thro? control linkage of the accelator pedal. Air and fuel supply to the
engine is controlled by the opening of the butterfly valve. However in a carburetor engine fuel flow is
governed by the carburetor which is proportionate to the air flow power produced by the ignition of air and
fuel provides speed. It is understood that when the throttle is opened more, increased quantity fuel and air is
supplied to the engine resulting in high speed.
The engine over speed controller (EOSC) receives the speed signals from the engine as input and compares it
with the predetermined maximum speed set point contained in the EOSC unit when the engine speed is less
than the set value of maximum speed the unit remains inactive and no output signal is given. However, when
the engine speed is equal or more than the set point, another electronic switch is activated such that the
ignition system generates misfire in one cylinder to reduce the power generated by the engine momentarily
by tending to reduce the engine speed. This control unit is pre-programmed, that the engine speed still is
more than the maximum pre-set value, yet another cylinder is triggered to misfire to impart better control
over the engine speed. If the engine speed is still more than the maximum pre-set value, the third cylinder is
also triggered to misfire in all the three cylinders for better speed control.
This misfire is monitored for a pre-determined time which is settable in the unit and if this time exceeds, the
engine over speed control unit deactivates an electronic switch to stop the fuel supply to the engine. This is in
addition to the misfire in the cylinders and is aimed at positive reduction in engine speed. Once the speed
limit is below the pre-set value electronic switch is actuated to restart fuel supply. Simultaneously the misfire
switches is deactuated to stop misfire and the engine restores its normal speed.
This device may also be attached to Carbureted engines running on bifuels like gasoline and CNG and
gasoline and LPG.
This patent is about to control over speeding of vehicles with help of new device. The device consists of input
and an output units and a programmed speed limit valve. The output is connected to electronic switches
which are capable of causing misfire in the cylinders and thereafter deactuating the fuel supply to the engine
Limitation of Prior Technology/Art :
Specific Problem Solved / Objective of Inventor :
Brief about Invention :
Key Learning Points :
Summary of Invention :

4. to reduce the speed. When the speed limit goes below the predetermined limit the fuel supply switch is
activated to restart the engine.
We can integrate engine with Electric Controlling Unit (ECU) which controls the
opening and closing of valves.
We can integrate engine with Electric Controlling Unit (ECU) which controls the
opening and closing of valves.
We can also attach eddy current generating circuit on crank shaft, which activates
once it crosses speed limit.
Number of Claims : 4
Patent Status : Granted Patent
How much this invention is related
with your IDP/UDP?
>91%
Do you have any idea to do anything around the said invention to
improve it? :