Title of Invention

AUTOMATIC DEVICE FOR PROVIDING OPTIMUM TIMING CHARACTERISTICS FOR SI ENGINE

Abstract

The present invention relates to an "Automatic device for providing an optimum ignition timing characteristics for SI engine. Automatic device for providing an optimum ignition timing characteristics for SI engine a said device for a four cycle SI engine which automatically provides optimum ignition timing to the engine that will speed up the process of heating up the engine within a short time thereby enabling the vehicle to perform to the desired performance, such that the said device will operate only when the temperature of the engine oil is less than a predetermined value. Therefore the device will not be operative if the temperature exceeds predetermined value.

Full Text

FIELD OF INVENTION This invention relates to Automobile Industry. More particularly this invention relates to ignition timing characteristics of SI engine. The present invention relates to an Automatic device for providing an optimum ignition timing characteristics for SI engine PRIOR ART Normally in any two stroke or four stroke vehicles, in order to get optimum performance the engine has to attain stabilized temperature, which normally is attained after running the vehicle for a few minutes depending upon the ambient conditions. During this period of running, lot of fuel will be consumed causing resource depletion. Exhaust emissions are also very high during this period causing environmental pollution. By optimizing the ignition timing the engine gets heated up fast, but maintaining the same ignition timing continuously will cause serious problems like seizure, knocking etc causing reliability problems to the engine. SUMMARY OF INVENTION This invention therefore proposes a device for a four cycle SI engine which automatically provides optimum ignition timing to the engine that will speed up the process of heating up the engine within a short time thereby enabling the vehicle to perform to the desired performance. This is so because the said device will operate only when the temperature of the engine oil is less than a predetermined value. Accordingly the said device will not be operative if the temperature exceeds the predetermine value. It is to be noted that the prior art description give in detail information of the technology, method, process and system known in the art. It explains the deficiency in the related art and the object of the invention being to overcome or surmount the problem associated with the prior art. This forms the essential feature and the object of the invention. The inventors have made great effort to provide a device which meet the requirement of the industry and overcome the problem associated in the prior art. To achieve the above object according to first aspect and feature of the present invention there is provided a device to improve, efficiency. According to second aspect and feature of the invention in addition to the first feature the invention comprises a device, which is unique, rugged efficient, economical. At the outset of the description which follows it is to be understood that ensuring description only illustrate a particular from of this invention. However, such particular form is only an exemplary embodiment without intending to imply any limitation on the scope of this invention. Accordingly, the description is to be understood as an exemplary embodiment and reading of the invention is not intended to be taken restrictive ly. The above and other objects features and disadvantages will be clear from the following description of preferred embodiment taken in conjunction with accompanying drawings. The foregoing description is outlined rather broadly preferred and alternative feature of the present invention so that those skilled in the art may better understand the detailed description of the invention that follows. Additional features of the invention will be described hereinafter that form the subject of claims of the invention. Those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiment as a basis for designing and modifying other structures for carrying out the same purposes of the present invention. Those skilled in the art should realize such equivalent conception do not depart from the spirit and scope of the invention in its broadest form. BRIEF DESCRIPTION OF DRAWINGS The accompanying drawing is intended to provide further understanding of invention and is incorporated in and constitutes a part of invention. The drawings illustrate an embodiment of invention and together with the description illustrate principle of invention. The drawing should not be taken as implying any necessary limitation on the essential scope of invention. The drawing is given by way of non-limitative example to explain the nature of the invention. For a more complete understanding of the instant invention reference is now made to the following description taken in conjunction with accompanying drawings. The various feature of novelty which characterize the invention are pointed out specifically in the claims which a part of description. For a better understanding of the invention, its operating advantage, specific objects obtained by its use, reference should be made to the drawings and descriptive matter is which there are illustrated and described preferred embodiments of invention. Automatic device for providing an optimum ignition timing characteristics for SI engine a said device for a four cycle SI engine which automatically provides optimum ignition timing to the engine that will speed up the process of heating up the engine within a short time thereby enabling the vehicle to perform to the desired performance, such that the said device will operate only when the temperature of the engine oil is less than a predetermined value. Referring now to drawing, where like numerals designate identical or corresponding parts throughout the referred views. This invention will now be described with reference to the accompanying drawing which illustrate, by way of example and not by way of limitation, the circuitry and layout diagram of one of various possible embodiments of this invention. Figure 1 illustrating a layout diagram of the said embodiment. Details description of an embodiment of invention. Sensor means are provided for sensing the rpm of the engine. One of the possible forms the sensor means can be taken is the pulsar coil or charging coil P of the magneto A. The output of the pulsar coil or charging coil is directly related to the rpm of the engine. In the following description reference is made only to the pulsar coil for the sake of brevity. The output signal from the pulsar coil is fed to a micro controller M. Linear potentiometer means are provided for the throttle of the engine and these means are symbolically represented by the potentiometer T. By "linear potentiometer means" is meant any known potentiometer means provided with sliding contacts of which at least one contact is movable, not only maintaining such means always in the ON condition, but also enabling the position of the moving contact to be determined. The said potentiometer T is connected to the micro controller M and feeds signal proportional to the throttle position to micro controller M. A temperature sensor TS is provided to the engine oil sump senses the temperature of the engine oil at a specific point gives a voltage proportional to the temperature. The voltage signal required is fed to the micro controller M. The output signal of the micro controller M is fed to the GDI unit (Capacitor Discharge Ignition unit) C. The GDI unit G which is operatively connected to the ignition system consisting of a Ignition coil IG and Spark plug S. This GDI unit G is controlling the ignition timing characteristics of the IG engine matching with plurality of curves provided in the GDI unit. The type of ignition cones to be followed is determined by the signal generated by the micro controller M. The principle of working is as follows: When the engine is running in the stabilized operating condition, the micro controller compares the value of the temperature sensed by the temperature sensor TS with that of the predetermined temperature value stored in its memory and switches over the GDI. G, to operate to the ignition timing curves which are dependant on the throttle position operated by the potentiometer T. During cold condition which is sensed by the oil temperature sensor TS, if the temperature is less than that of the predetermined temperature stored in the micro controller M, the signal from the micro controller directs the CD! C to operate to the ignition characteristics curve required to warm up the engine quickly by bypassing the throttle operation control potentiometer T. At this condition the engine will warm up quickly and attains the optimum running temperature quickly. Once the temperature of the oil reaches the optimum pre determined temperature, the micro controller M gives the signal to the GDI unit G to operate to any one of the curves which are throttle position dependant. The invention has been explained in relation to specific embodiment. It is inferred that the foregoing description is only illustrative of the present invention and it is not intended that the invention be limited or restrictive thereto. Many other specific embodiments of the present invention will be apparent to one skilled in the art from the foregoing disclosure. All substitution, alterations and modification of the present invention, which come within the scope of the following claims, are to which the present invention is readily susceptible without departing from the spirit of the invention. The scope of the invention should therefore be determined not with reference to the above description but should be determined with reference to appended claims along with full scope of equivalents to which such claims are entitled. WE CLAIM 1) Automatic device for providing an optimum ignition timing ciiaraoteristics for SI engine a said device for a four cycle SI engine which automatically provides optimum ignition timing to the engine that will speed up the process of heating up the engine within a short time thereby enabling the vehicle to perform to the desired performance such that the said device will operate only when the temperature of the engine oil is less than a predetermined value. 2) Automatic device for providing an optimum ignition timing characteristics for SI engine a said device as claimed in claim 1 wherein sensor means are provided for sensing the rpm of the engine, one of the possible forms the sensor means can be pulsar coil or charging coil of the magneto, the output of the pulsar coil or charging coil is directly related to the rpm of the engine, in the following description reference is made only to the pulsar coil for the sake of brevity. 3) Automatic device for providing an optimum ignition timing characteristics for SI engine a said device as claimed in claim 1 wherein the output signal from the pulsar coil is fed to a micro controller, linear potentiometer means are provided for the throttle of the engine, means being provided with sliding contacts of which at least one contact is movable, not only maintaining such means always in the ON condition, but also enabling the position of the moving contact to be determined. 4) Automatic device for providing an optimum ignition timing characteristics for SI engine a said device as claimed in claim 1 wherein the said potentiometer being connected to the micro controller and feeds signal proportional to the throttle position to micro controller, a temperature sensor is provided to the engine oil sump senses the temperature of the engine oil at a specific point gives a voltage proportional to the temperature, the voltage signal required is fed to the micro controller, the output signal of the micro controller is fed to the unit (Capacitor Discharge Ignition unit) , the said unit which is operatively connected to the ignition system consisting of a Ignition coil and Spark plug , this said unit controlling the ignition timing characteristics of the IC engine matching with plurality of curves provided in the said capacitor discharge ignition unit. 5) Automatic device for providing an optimum ignition timing characteristics for SI engine a said device as described in the description of the complete specification and as illustrated by way of drawings accompanying the complete specification.

Documents:

0078-che-2004 abstract.pdf

0078-che-2004 claims.pdf

0078-che-2004 correspondence others.pdf

0078-che-2004 description (complete).pdf

0078-che-2004 description (provisional).pdf

0078-che-2004 drawings (provisional).pdf

0078-che-2004 drawings.pdf

0078-che-2004 form-1.pdf

0078-che-2004 form-18.pdf

0078-che-2004 form-5.pdf

78-CHE-2004 CORRESPONDENCE OTHERS 04-04-2011.pdf

78-CHE-2004 CORRESPONDENCE OTHERS 04-04-2011.pdf

78-CHE-2004 CORRESPONDENCE OTHERS 18-05-2012.pdf

78-CHE-2004 AMENDED CLAIMS 22-10-2010.pdf

78-CHE-2004 AMENDED PAGES OF SPECIFICATION 22-10-2010.pdf

78-CHE-2004 CORRESPONDENCE OTHERS 04-06-2012.pdf

78-CHE-2004 CORRESPONDENCE OTHERS 06-07-2011.pdf

78-CHE-2004 CORRESPONDENCE OTHERS 13-03-2012.pdf

78-CHE-2004 CORRESPONDENCE OTHERS 17-07-2012.pdf

78-CHE-2004 CORRESPONDENCE OTHERS 22-03-2012.pdf

78-CHE-2004 CORRESPONDENCE OTHERS 27-04-2010.pdf

78-CHE-2004 EXAMINATION REPORT REPLY RECIEVED 22-10-2010.pdf

78-che-2004 power of attorney 22-10-2010.pdf

78-CHE-2004 POWER OF ATTORNEY 27-04-2010.pdf

78-CHE-2004 PRE GRANT OPPOSITION 06-09-2012.pdf

78-CHE-2004 PRE GRANT OPPOSITION 03-11-2010.pdf

78-che-2004 pre grant opposition-1 09-06-2011.pdf

78-che-2004 pre grant opposition-2 09-06-2011.pdf

78-che-2004 pre grant opposition-3 09-06-2011.pdf

78-che-2004 pre grant opposition-4 09-06-2011.pdf

78-CHE-2004 PRE GRANT OPPOSITION1 06-09-2012.pdf