Challenge

Project

SShreyash Dange1 Mar 2023

Aim: To carry out a system level simulation of a Baja all-terrain vehicle report explaining the model properties of the result.

Objective:

A technical report of the Baja ATV model.
A different property and command on the result.
Analyse all components and understand the relation and flow of the block.

Task 1

To study Baja ATV based models without using a dashboard.

Theory:

A BAJA is an ATV(All Terrain Vehicle) which is known to be manufactured by international teams and also college students. This vehicle is used for competing in inter-collegiate competitions at national and international level. A BAJA ATV is designed keeping in mind the driver's ergonomic comfort in focus.
At its simplest, an all-terrain vehicle (ATV) is defined as a vehicle with the following: a straddle seating position, handlebar steering, and the ability to maneuver through a variety of terrain conditions.
An all-terrain vehicle (ATV) is defined as a motorized off-highway vehicle designed to travel on four low-pressure or non-pneumatic tires, having a seat designed to be straddled by the operator and handlebars for steering control.
Continuously Variable Transmission (CVT) is an automatic transmission that uses two pulleys with a steel belt running between them. To continuously vary its gear ratios, the CVT simultaneously adjusts the diameter of the "drive pulley" that transmits torque from the engine and the "driven pulley" that transfers torque to the wheels.
CVTs are always adjusting, so they keep engine RPMs low and consistent, avoiding the high engine speeds that suck down gasoline. CVTs also have lower production costs because they have fewer moving parts than traditional automatics. This is another appealing factor to car manufacturers, and thus to car buyers as well.
Automakers increasingly use CVTs due to several benefits they provide: Increased fuel economy. CVTs are more efficient than standard automatic transmissions and are commonly utilized in hybrid powertrains and smaller cars to maximize the number of miles you can travel on every gallon of gas. Responsive acceleration.

Simulink Model of BAJA ATV without dashboard

Simulink block used

Signal Builder
Solver Configuration
Goto Tag
Simulink ps converter
Mechanical Rotational Reference
Generic Engine
Scope
Engine Sensor
- RPM Sensor
- Mechanical Rotational Reference
- Scope
CVT
- Input shaft Inertia
- Output Shaft Inertia
- Variable Ratio Gear
- Ideal Rotation Motion Sensor
- CVT Primary RPM
- CVT secondary RPM
Vehicle Body
- Double Shoe Brake
- Vehicle Body
- WInd velocity
- Integrator
- Inclination
- 4 Tire

BAJA ATV Model With Dashboard

In this simulink model of baja Atv, break input and throttle are given by signal builder.
After the input given by signal builder to the generic engine, then generic engine gives signal to engine sensor
Engine Sensors
CVT
Vehicle Body
Flow Process
- A brake input is constant at 0
- A throttle signal is generated using signal builder, and given input to a generic engine.
- CVT ratio is the speed controlled by the variable CVT ratio and the to control output speed in the vehicle axle.

Result:

Torque Speed
1. This plot is common for both cases.
Vehicle Speed output based on given output of brake power and throttle
The engine reduce speed and is controlled by various CVT ratios

Task 2

To study Baja ATV based models using a dashboard

Simulink Model of BAJA ATV without dashboard

For giving inputwe had used a knob block, constant and Custom Gauge, for giving input to the system. from where we can control the system that board is called as dashboard.
Dashboard to control and give feeding to the system. The main advantages of the dashboard is we can control while running the program, break input and throttle input are controlled by the user.

Running Simuling block

Result

Workspace
Vehicle Speed output based on given output of brake power and throttle
CVT speed

Conclusion

It can be concluded that the simulation for the BAJA ATV model was successfully done.
CVT primary shaft speed is greater than the secondary shaft speed which is directly proportional to their shaft diameter.
The speed might get zero at a particular resistance of breaking.

Project

Ship work like this
in your own course.

Talk to a career counsellor

Ship work like thisin your own course.

Talk to a career counsellor

Ship work like this
in your own course.