DESC:FIELD OF THE INVENTION:
The present invention relates to brackets. Particularly, the present invention relates to a bracket for conducting an oil pull-over test of a wet-type air-cleaner assembly adapted on a tractor.

BACKGROUND OF THE INVENTION:
As per the norms defined by the respective governments, manufactures of tractors require to conduct various tests before sending the tractors to sell in the market.
The air cleaner is an important device which cleans and filters the air before entering the combustion chamber of an engine. The volume of the air used is about 10,000 gal/gal of fuel. Unfiltered air may contain millions of particles of abrasive dust and other matter, which could cause rapid wear of the engine components. The principal cause of wear in an engine is the dust formation. The effect of dust mixed with lubricating oil is similar to valve grinding paste. The rapid wear of sleeves, pistons and piston rings, valves, valve guides and valve seats are evidences of dust entering the engine. Sometimes, air leaks during compression in the chamber and mixes with the oil. This dusty oil affects the crank and crankshaft bearings. Hence, air cleaners must be highly efficient at all times, especially when working in dusty conditions, threshing, etc. Therefore, one of the tests include testing air cleaner of the tractor known as the operating efficiency, good performance and durability of an engine depend significantly upon its air cleaner. There are two types of air cleaners used in tractor namely dry type air cleaner and wet type air cleaner.
As per the norms, an oil pullover test is required to be carried out of a tractor using a wet type air-cleaner assembly. The test is conducted to check oil carry over with air through an air cleaner assembly.
In the oil pull-over test, the tractor is required to be positioned or parked at differently-different angles with respect to the ground level for conducting the test in order to test the workability of the wet type oil cleaner at particular angles at which the tractor would require to be worked in the field. In this test, the engine is required to be operated at full governed speed for 15 minutes. This is then followed by sudden accelerations and decelerations made after every 30 seconds for a period of 15 minutes. The air-cleaner assembly is weighed before and after the test to check and report the loss of mass of oil, both in grams and in percentage of mass. The air cleaner oil pullover test is required to be carried out in the following positions: a) In horizontal position; b) In the case of wheeled tractors, the tests shall be repeated with the tractor tilted 150 to LH , RH either side and then 150 forward and backward in relation to the direction of travel of the tractor. The said positions are shown in Figure 1. Figure 1A shows a tractor inclined from front at 150 and Figure 1B shows a tractor inclined at from the rear at 150. Figure 1C shows a tractor inclined at 150 from the left side and Figure 1D shows a tractor inclined at 150 from right side. However, for such testing, adjacent parts of the tractor nearby the lifting points are required to be removed to avoid damage of parts and ease of tractor lifting at the said Positions. This set up preparation activity is time consuming. Further, it's difficult to always get a proper 150 angle every time.
Hence, there is a requirement of means that will reduce testing hours, efforts, inaccuracies as well as manpower.

SUMMARY OF THE INVENTION:
Accordingly, the present invention provides a bracket for conducting an oil pull-over test of wet-type air cleaner assembly of a tractor’s engine during Engine Testing level instead of Tractor Testing level. The bracket comprises a holding means and a tilting means. The holding means holds the wet-type air cleaner assembly. The tilting means allows mounting the bracket on an engine of the tractor to be tested and tilting the holding means to predetermined angles for conducting the oil pull-over test of the wet-type air-cleaner assembly without tilting the tractor’s engine.
According to an embodiment of the present invention, the holding means is a clamp for adapting a wet-type air cleaner removably with tightening means for eg. screws, nut-bolts and the like. Advantageously, the holding means can be a circular-type clip made of metal.
According to an embodiment of the present invention, the tilting means comprises a first tilting means to be connected to the holding means at predetermined angles and a second titling means to be fixed over the engine of the tractor.
According to the present invention, the predetermined angle is an angle defined by the testing authority for carrying out the pull-over test of the wet-type air cleaner assembly of a tractor engine. Advantageously, the predetermined angle is 150.
Advantageously, the bracket of the present invention allows to conduct an oil pull-over test of the wet-type air cleaner assembly as per the norms by tilting the bracket only and with or without mounting the engine over the tractor body.

BRIEF DESCRIPTION OF THE DRAWINGS OF THE PREFERABLE EMBODIMENT OF THE INVENTION:
Reference will be made to embodiments of the invention, examples of which may be illustrated in the accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in the context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments:
Figure 1 through Figures 1A-1F shows various angles at which tractor is tilted for carrying out oil pullover tests of the wet type air cleaner;
Figure 2 shows a bracket according to the preferable embodiment of the invention;
Figure 3 shows an exploded view of the bracket along with a wet type air cleaner according to the preferable embodiment of the invention;
Figure 4 through the Figures 4A-4B shows rear views of the engine for conducting an oil pull-over test wherein:
Figure 4A shows a bracket holding the wet-type air cleaner horizontally for carrying out horizontal test;
Figure 4B shows the wet-type air cleaner inclined at the right hand side at 150 which is tilted with the help of the first tilting means; and
Figure 4C shows the wet-type air cleaner inclined at the left hand side at 150 which is tilted with the help of the first tilting means;
Figure 5 through the Figures 5A-5B shows side views of the engine for conducting the oil pull-over test wherein:
Figure 5A shows a bracket holding the wet-type air cleaner horizontally for carrying out horizontal test;
Figure 5B shows the wet-type air cleaner inclined at front side at 150 which is tilted with the help of first tilting means; and
Figure 5C shows the wet-type air cleaner inclined at the rear side at 150 which is tilted with the help of the first tilting means.

DETAILED DESCRIPTION OF THE INVENTION
In general, the present invention provides a bracket for conducting an oil pullover test of a wet-type air-cleaner assembly. The bracket comprises two main components, namely holding means and a titling means. The holding means holds a wet-type air cleaner tightly and the tilting means allows tilting of the holding means to the predetermined angles for conducting the oil pullover test of the wet-type air-cleaner assembly.
The invention described herein now using a specific exemplary embodiment for better understanding of the invention and however, does not limit the invention to that specific embodiment described with the help of the Figures 2-5.
As shown in Figures 2 and 3, the bracket (100) comprises a holding means (110) and a tilting means (120, 130) for mounting and tilting the holding means (110) to predetermined angles for conducting the oil pull-over test of the wet-type air-cleaner assembly.
As shown in Figure 2 and 3, the holding means (110) is a clamp within which a wet-type air cleaner (50) can be adapted removably with tightening means (112) including but not limited to screws, nut-bolts and the like. The clamp shown in Figures 2 and 3 is a circular type clip, however, any other known means can be used to match shape and profile of the air cleaner to be secured.
The titling means (120, 130) comprises two means, namely first tilting means (120) and second tilting means (130).
The first titling means (120) has guiding and locking slots (122) and a pivot hole (121) for rotating and tilting the wet-type air cleaner (50) at a predetermined angle. The predetermined angle is preferably 150 as defined by the present norms. Alternatively, the predetermined angle can be altered as per the requirements by modifying the slots (122). As shown in the Figures 1 and 2, the holding means is adapted fixedly to the first means.
The second means (130) is “L”- shaped angle plate on which the first tilting means can be adapted removably by known fastening means (132) allowing to adapt the wet type air cleaner at horizontally. According to the present invention, each surface of the angle plate has a pivot (131) for rotating the first tilting means (120) and fastening means (132) for fixing the first tilting means (120) at the predetermined angles. The first tilting means and the second tilting means is adapted pivotally that allows to change the angle of the wet type air cleaner.
Figure 4 through the Figures 4A-4B shows rear views of the engine wherein the bracket according to the present invention is mounted on the engine to conduct an oil pull-over test. As shown in Figure 3, the bracket has first tilting means and holding means, wherein the first tilting means (120) is directly mounted on the engine. Alternatively, the second tilting means can be used for carrying out the tests.
Figure 4A shows a bracket holding the wet-type air cleaner horizontally for carrying out horizontal test on the tractor engine (200).
Figure 4B shows the wet-type air cleaner (50) inclined at the right hand side at 150 which is tilted with the help of the first tilting means (120) on the tractor engine (200).
Figure 4C shows the wet-type air cleaner inclined at the left hand side at 150 which is tilted with the help of the first tilting means (120) on the tractor engine (200).
Figure 5 through the Figures 5A-5B shows side views of the engine wherein wherein the bracket according to the present invention is mounted on the engine to conduct the oil pull-over test. As shown in Figure 3, the bracket has first tilting means, second tilting means and the holding means (110) wherein the second tilting means (120) is mounted on the engine and the first titling means is mounted over the second tilting means. After mounting, the test of the wet type air cleaner can be conducted as per the requirements.
Figure 5A shows a bracket holding the wet-type air cleaner horizontally for carrying out horizontal test with the help of the first tilting means(120) and second tilting means (130) on the tractor engine (200). Alternatively, the horizontal test can be carried out without using a second tilting means as shown in Figure 4A.
Figure 5B shows the wet-type air cleaner inclined at front side at 150 which is tilted with the help of first tilting means (120) and second tilting means on the tractor engine (200).
Figure 5C shows the wet-type air cleaner inclined at the rear side at 150 which is tilted with the help of the first tilting means(120) and second tilting means (130) on the tractor engine (200).
The present invention allows to conduct an oil pull-over test of the wet-type air cleaner assembly as per the norms by tilting the bracket only. The bracket allows to conduct a test at the exact angle. Further, the bracket can be assembled and removed easily without causing damage to the tractor parts by giving away with use of the lifting means such as lifting tackles etc. that tend to cause such damage and the test can be carried out directly over the engine. Moreover, the bracket allows to test wet type air cleaner at any angle. The bracket is very handy & can accommodate easily for the test set-up due to light weight design. The bracket can be made in any suitable material including metals, plastics, etc. Further, easy assembling and dismantling of the bracket reduce the time required for conducting the test as well as manpower and also non-skilled person can easily set-up the test or change the arrangement.
Further, the bracket can be adapted to fit to any engine with suitable variations in the mounting arrangement and the fastners, is easy to install, and greatly reduces the amount of work required to prepare the test setup in terms of efforts and time, besides better accuracy in the desired test-angle. Moreover, the test can be carried out directly on the engine i.e. without tractor body.
Example 1:
An oil pull-over test was conducted over a tractor engine by using a bracket of the present invention. It was found that the test setup can be completed with less than 80 % of earlier set up time and 50 % in manpower saving as compare to conventional way of testing i.e. tilting the tractor at different angles wherein an oil pull over testing takes one day activity. Further, more space is required for the conventional methods to accommodate the tractor which in turn can easily be done in Engine level test labs of compact set-up and smaller space by using the brackets of the present invention.
The foregoing description of the invention has been set merely to illustrate the invention and is not intended to be limiting. Since modifications of the disclosed embodiments incorporating the substance of the invention may occur to a person skilled in the art, the invention should be construed to include everything within the scope of the disclosure. Further, Figures 2-5 are intended to be illustrative, not limiting the invention to the designs as shown in the Figures. Although, the invention is generally described in the context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments as shown in the Figures 2-5. In the present application, the holding means, titling means referred in the claims as foregoing description should be read in general sense. While the present invention has been described herein with respect to the various exemplary embodiments, it will be apparent to one of the ordinary skill in the art that many modifications, improvements and sub combinations of the various embodiments, adaptations and variations can be made to the invention without departing from the spirit and the scope thereof as claimed in the following claims:
,CLAIMS:
1. A bracket for conducting oil pull-over test of wet-type air cleaner assembly of a tractor engine, said bracket comprising:
a holding means for holding the wet-type air cleaner assembly; and
a tilting means for mounting the bracket on an engine of tractor to be tested and tilting the holding means to predetermined angles for conducting the oil pull-over test of the wet-type air-cleaner assembly without tilting the tractor engine.

2. The bracket as claimed in claim 1, wherein the holding means is a clamp for adapting a wet-type air cleaner removably with tightening means including screws, nut-bolts and the like.

3. The bracket as claimed in claim 1 or 2, wherein the holding means is a circular-type clip made of metal.

4. The bracket as claimed in clam 1, wherein the tilting means comprises a first tilting means to be connected to the holding means at predetermined angles and a second titling means to be fixed over the engine of the tractor.

5. The bracket as claimed in claim 4, wherein the first tilting means has guiding and locking slots and a pivot hole for rotating and tilting the holding means at predetermined angles.

6. The bracket as claimed in claim 4, wherein the second tilting means is an angle plate, each surface of the angle plate has a pivot for rotating the first tilting means and fastening means for fixing the first tilting means at the predetermined angle.

7. The bracket as claimed in one of the preceding claims 1-6 wherein the predetermined angle is an angle defined by the testing authority for carrying out the pull-over test of the wet-type air cleaner assembly of a tractor engine.

8. The bracket as claimed in one of the preceding claims 1-6 wherein the predetermined angle is preferably 150.

Dated this 26th day of March, 2015
FOR MAHINDRA & MAHINDRA LIMITED
By their Agent

(GIRISH VIJAYANAND SHETH) (IN/PA 1022)
KRISHNA & SAURASTRI ASSOCIATES