Project

AIM: The aim of the project is to verify the change of velocity and rpm of the engine with changes in throttle input.

Used blocks:

The following blocks are used to validate the BAJA ATV with change of throttle input

1. Generic engine

2. Engine Sensor

3. CVT

4. gear

5. Vehicle body

Fig1. CVT with predefined throttle input and break with signal builder

Fig .2 BAJA vehicle model with userdifined throttle input and break system.

Generic Engine:

The genric engine gets the constant throttle torque from constant block. The Engine develops the force according to the input. The Force which is generated by Generic engine is sensed by enginne sensor which senses the rpm and the force is directle given to CVT (Continously variable transmission).

Engine Sensor:

Fig 3. Internal blocks of engine sensor

3. CVT

Fig 4 Internal blocks of CVT model

CVT has two inputs which are force, gear ratio which is fed by signal builder. The gear ratio is fed to variable ratio gear which changes the torque inversly propostional to the speed.

Simple Gear:

The simple gear changes the torque according to the teeth ratio.

Vehicle body:

Fig 5 Block diagram of Vehicle body

The vehicle body is modeled with tyres , break and accelration system, which depeends on wind velocity and inclination.

Operation:

Fig 5 Results of the BAJA ATV model

It is observed from the above result that the velocity is constant wth constant thtrottle input and zero break. The velocity changes propotionatly to the throttle input and inversly to brake input, which can observe in dashboard.

Fig Dash board

Conclusion :

The project is analysed the BAJA ATV model for different throttle inputs and breaks both predefine and user defined.