FORM 2
THE PATENT ACT 1970
&
The Patents Rules, 2003
PROVISIONAL SPECIFICATION
(See section 10 and rule 13)
1. TITLE OF THE INVENTION
Sensor holding adapter for hot surfaces.
2. APPLICANT
(a) Name : MAHINDRA & MAH1NDRA LIMITED
(b) Nationality : An Indian Company registered under the Companies
Act, 1956
(c) Address : R&D Center, Automotive Division,
Mahindra & Mahindra Limited,
89, M.I.D.C., Satpure, Nashik - 422 007,
Maharashtra, India
3. PREAMBLE TO THE DESCRIPTION
PROVISIONAL
The following specification describes the invention

Field of Invention:
The present invention is related to an adopter device with a forced cooling system to hold a data sensing sensor during data collection over the hot surfaces of the automotive components. More particularly the present invention is related to the sensor holding adopter device with forced cooling system for use during vibration measurement on the exhaust assembly of the automotive vehicle.
Background of the Invention:
During the testing of automotive vehicles, some data measurements need to be done on the hot surfaces of the automotive components. For example, to measure the vibrations on exhaust assembly of the vehicle, the vibration sensor needs to be put on the outer surface of the exhaust assembly. Under testing, the temperature of the exhaust assembly goes very high that is 350 to 500 degree centigrade or even more. At this temperature,sensors/vibration sansors gat damaged as it can not sustain the high temperature. The vibration sensors can sustain the temperatures upto 125 degree centigrade. So for effective working of the vibration sensor, the temperature around it should be always below its temperature sustaining limit, say 'safe temperature zone'.
To achieve this safe temperature zone, vibration sensor holding adapter device has been developed and forced cooling system has been provided which maintains the temperature around the sensor at 60 - 65 degree centigrade.
Objectives of the Invention:
Objective of the present invention is to provide a sensor holding adapter device for data measurement on hot automotive components.
Another object of the present invention is to provide a sensor holding adapter device with forced cooling system for use during data collection over surfaces of automotive components.

Still another object of the present invention is to provide a sensor holding adapter device which is stiff enough and does not dampen the data measurement results.
Further objective of the present invention is to provide a sensor holding adapter device with forced cooling system wherein the cooling system maintains the temperature below 65 degree centigrade around the sensor.
Still further object of the present invention is to provide a sensor holding adapter device with forced cooling system which is cost effective, compact and facilitates its transportation at any test location.
Brief description of the Figures:
The objectives and advantages of the present invention will become apparent from
the following description read in accordance with the accompanying drawings
wherein,
Figure 1 shows the basic structure of a sensor holding adapter device in accordance with the present invention;
Figure 2 shows another embodiment of sensor holding adapter device with the
base plates for mounting;
Figure 3 shows the sensor holding adapter device connected with the forced
cooling system in accordance with the present invention; and
Figure 4 shows the sensor holding adapter device connected in parallel in the
forced cooling system.
Detailed description of the present invention:
The foregoing objects of the present invention are accomplished and the problems
and shortcomings associated with the prior art, techniques and approaches are
overcome by the present invention as described below in the preferred
embodiment.
Referring to Figure 1, sensor holding adapter device (1) comprises of base (2), a
pipe conduit (3), upper sensor mounting base (4) and a bolt/means (5) to hold the

sensor. The base (2) is made of mild steel plate to which a mild steel pipe (3) is fixed by way of brazing or welding. The pipe (3) transfers the cooling water in the circuit. Sensor mounting base (4) is made of mild steel and it is brazed / welded on the outer periphery of the pipe (3). The sensor mounting base (4) can have any cross section such as triangular, square, pentagonal, hexagonal and like with circular opening (6) at its center to receive the sensor holding means (5). The circular opening (6) has the threads along its depth. The sensor holding means (5) has a flat platform (7) for the sensor and a shank (8). The shank (8) is provided with the threads that match with the threads on circular opening (6) of the sensor mounting base (4). The sensor is fixed / pasted on the flat platform (7) by suitable means and then the sensor holding means (5) is screwed in the circular opening (6).
The sensor holding adapter device (1) is fixed / fitted on the hot surface of the automotive component where the data is to be recorded. The base (2) is screwed to the hot surface with the help of screws or can be fitted on the hot surface by adhesive or any other suitable means. Therefore, the sensor does not directly come in contact with the hot surface. The water flowing through the pipe (3) keeps the temperature of the sensor holding base (4) quite below the sustainable limit of the sensor. The structure of the sensor holding adapter device (1) is stiff enough and it does not modify the result or add its own results.
Another embodiment of the sensor holding adapter device (1) is provided with base plate (9) and bracket (10) for mounting the sensor as shown in Figure 2. The base plate (9) is square in shape and is provided with the holes at its four corners. The base plate (9) facilitates the mounting of sensor holding adapter device (1) on the hot surface of the automotive component. The base plate (9) is spot welded to the base (2) of the sensor holding adapter device (1). Bracket (10) facilitates the base for mounting the sensor. It is welded to the flat platform (7) of the sensor holding means (5).The bracket (10) can be of any shape that is square,

rectangular, circular and like depending upon the size and/or mounting convenience of the sensor to be mounted on it.
Referring to Figure 3, the forced cooling system (11) of the sensor holding adapter device (1) comprises of heat radiator (12) supported with cooling fan (13), coolant / water tank (14) and a pump (15) to force the water connected through piping (3) to the sensor holding adapter device (1) thus forming a closed loop. At the time of data measurement, the sensor holder adapter device (1) is placed / fitted over the hot surface of the automotive component and water is made to flow through the closed circuit. At the location of sensor holding adapter device (1), the flowing water gets heated by absorbing the heat of the hot surface. In the radiator (12), the water radiates the heat to the atmosphere by cooling. The cooling is achieved by externally powered cooling fan / suitable cooling means (13). The cooled water is recollected in the water/coolant tank (14) which is gain circulated through the circuit by the water pump (15). The water pump (15) is operated by the external power source / battery.
On the hot surface of the automotive component say exhaust assembly of the vehicle the temperature is around 350 degrees or more. The vibration sensor can not sustain this much of temperature as its temperature sustaining limit is up to 125 degrees centigrade. The forced cooling system (11) as disclosed above always keeps the temperature below 65 degree centigrade around the sensor.
If the vibration data is to be measured at different locations on the hot surface of an automotive component, the sensor holder adapter device (1) can be attached in parallel with the help of Teflon tubes (16) and T-connector (17) as shown in Figure 4. Thus, it forms the network of multiple sensors connected in the forced cooled circuit as shown in Figure 4.
The data sensor can be any sensor like accelerometer, roll sensor, force sensor, proximity sensor, pressure sensor. The hot body surface can be like automotive

components, electrical motor, generators, oven, Compressor transformer, and like such bodies whose temperature during the test goes above 100 degree centigrade.
Advantages of the present invention:
- The device is quite compact and easy to construct.
- It does not damp the data measurement results, however it give the precise measurement data.
- The sensor holding device is cost effective.
Ft is light in weight and easy to transport at any test location.
It is to be understood that the present invention is not limited in its application to the details of the construction and to the arrangement of the components as mentioned in the above description or illustrated in the drawings. However, it is to be taken as the preferred example of the invention and that various changes in the shape, size and arrangement of parts considering the space constraint may be resorted to without departing from the spirit of the invention. The invention is capable of other embodiments and of being practised and carried out in various ways. Also, the terminologies used herein are for the purpose of description and should not be regarded as limiting.