FIELD OF INVENTION

The present invention relates to a testing system for a motorized vehicle and more particularly to a testing system used for the measuring different parameters related to chassis of the motorized vehicles.

BACKGROUND OF THE INVENTION

Generally, in the existing technology the testing system used for chassis of the motorized vehicle can be used for multiple vehicle through electromagnetic coupling but there is a drawback as the parameters measured for different vehicles cannot be taken on different conditions such as different gradients, gravitation acceleration, vehicle speed and acceleration etc. hence there is a need for a testing system which can measure different chassis parameters on different conditions and hence can be compared.

SUMMARY OF THE INVENTION

The present invention related to a motor vehicle testing system having a dynamometer, multiple rear wheel holders connected to the dynamometer through shaft, multiple front wheel holders, an engine cooling device and multiple front wheel gradient changing devices used for changing the gradient of the front wheel holders and the front wheel gradient devices are controlled by multiple microprocessor units and wherein a signal receiver is transmitting the signal from microprocessor to the front wheel gradient device.

The claimed device has higher capacity for testing the vehicle such that multiple vehicles can be tested simultaneously and on different condition such that different parameters can be measured and compared simultaneously.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING

The present invention will become more fully understood from the detailed description given herein below and the accompanying drawing which is incorporated in and constitute embodiments of the invention, illustrate several aspects of the invention and together with a description of the embodiments serve to explain the principles of the invention and thus, are not limited of the present invention and a brief description of the drawing is as follows:

Figure 1 is the schematic representation of the top view of the claimed system in order to show the embodiments of the invention.

Figure 2 is the schematic diagram for the testing system showing the essential embodiments of the invention.

DETAILED DESCRIPTION OF THE INVENTION

The embodiments disclosed below are not intended to be exhaustive or to limit the invention to the precise forms disclosed in the following detailed description. Rather, the embodiments are chosen and described for enablement purpose of the invention. The invention may have application to all types of vehicles specifically as two wheelers and three wheelers.

Figure 1 is an exemplary the schematic representation of the top view of the claimed system in order to show the embodiments of the invention. In figure 1 rear wheel holders (105, 107) are coupled with the dynamometer (101) through the shaft (117). The rear wheel holders 105 and 107 are holding the rear wheels 104 and 106 of the vehicles 109 and 110 respectively. A torque sensor is fitted over the shaft 117 of the dynamometer 101. Further the front wheels 111 and 112 of the vehicle 109 and 110 are placed in the front wheel holders 113 and 114. The engine cooling devices (115, 116) are placed in such a way so that the engine can be cooled whenever required during the testing of the vehicle.

Further, referring to the figure 2, essential embodiments of the invention is shown by a schematic diagram of the claimed testing system. Rear wheel (104) of the vehicle (109) is placed in roller type rear wheel holder (105) which is moving with the torque transferred by the shaft (117) connected to the dynamometer (101) (not shown in the figure 2).
Further, the front wheel (111) of the vehicle (109) is placed in the front wheel holder (113).

A gradient changing device (120) is secured below the front wheel holder (113) such that the gradient of the front wheel holder (113) can be changed as required. Said gradient changing device (120) is controlled by a microprocessor unit (122) which is providing different outputs based on the inputs provided to the microprocessor (122) to the signal receiver (121) which is sending the output to the gradient changing device (120) resulting which the gradient of the vehicle (109) is changing. The inputs to the microprocessor (122) can be provided in any order of patterns, but fulfilling the requirements of the calculating equation 1:

Eq- 1

wherein:

mveh = Vehicle mass
mdw = Mass equivalent of driven wheels
mnw = Mass equivalent of non - driven wheels
g = Gravitational acceleration
α = Road gradient (angle in deg)
a = Vehicle acceleration
V = Vehicle speed
R0,R1,R2 = Road load coefficients

The road load coefficients R0, R1, R2 are obtained from the vehicle coast down data. The mass of vehicle, driven and non-driven wheels (mveh, mdw, mnw) are entered as constants depending on the type of vehicle. The vehicle instantaneous speed and road gradients are given in the time history format as shown below in equation 1: (v,a) = f(t)-(2)-Eq:2

Input (v,a) as a test script (program) and is of the following form and the same is fed to the microprocessor 122. The instantaneous values of v and a are fed to the microprocessor 122 where the tractive force to be applied is calculated as per equation-1.
The road gradient value a is passed on to the front wheel gradient control device such that gradient is raised or lowered to achieve the physical tilting of the vehicle while running.
The complete system runs in closed loop control mode and vehicle speed and road gradient values are monitored and adjusted accordingly. Different exemplary pattems or input options are shown below in table 1.

Time (S) Speed (v) Gradient (cr)
0 0 0
1 0 0
2 0 0
3 0 0
4 0 4
5 0 4
6 4 4
7 8 0
8 12 -2
9 16 -2

Table 1 Further referring back to figure 1, claimed system has multiple holding units (105, 107) coupled together through the shaft (117) and the holding units (113, 114) are coupled with multiple microprocessor unit (122 as shown in figure 2) changing the gradients thus multiple vehicle can be tested and different parameters for different input conditions can be measured.

WHAT IS CLAIMED IS

1) A testing system for a motor vehicle comprising:

a) a dynamometer regulated by a dynamometer control device and coupled with a shaft engaged with a plurality of rear wheel holder;

b) a cooling mechanism secured neighbouring to a plurality of front wheel holder;

c) a plurality of front wheel gradient control device configured to facilitate predefined gradient level of the plurality of front wheel holder and secured neighbouring to the plurality of front wheel holder; and

d) atleast one microprocessor unit configured to regulate the front wheel gradient changing device and the dynamometer.

2) The testing system, as claimed in claim 1, wherein the plurality of front wheel gradient control device is secured below the plurality of front wheel holder.

3) The testing system, as claimed in claim 1, wherein the microprocessor unit is regulating the front wheel gradient changing device through at least one signal receiver.

4) The testing system, as claimed in claim 3, wherein the signal receiver is transmitting signal from the microprocessor unit to the front wheel gradient control device.

5) The testing system, as claimed in claim 1, wherein the microprocessor unit is regulating the dynamometer through a dynamometer control unit.

6) The testing system for the motor vehicle substantially as herein described with reference to, and as illustrated In, the accompanying drawings.