Bajaj Pulsar 150cc PV Diagram visualizer for otto cycle

Objective:

1) To analyse and plot PV diagram of Bajaj Pulsar 150cc working on otto cycle.

2) To calculate thermal efficiency of otto cyle.

Program

%ploting and caluting various otto_cyle parameters

clc;

clear all;

close all;

% Input( temp in kelvin)

gamma=1.4;

t3=2800;

%Engine geometric parameters for Bajaj Pulsar 150cc see reference

bore= 0.058;

stroke=0.0564;

rc=10;

c_rod_length=0.1;

%state variables

t1=500;

p1=101325;

%cal swept and clearance

volumev_swept=(pi*(bore^2)*stroke)/4;

v_clearance= v_swept/(rc-1);

%cal v1 and v2

v1= v_clearance + v_swept;

v2=v_clearance;

% cal p2 and t2

p2=p1*rc^gamma;

t2=t1*rc^(gamma-1);

const=p1*v1^gamma;

v_compression=engine_kinematics(bore,stroke,rc,c_rod_length,180,0);

p_compression=const./v_compression.^gamma;

%calp3

p3=p2*t3/t2;

v3=v2;

const=p3*v3^gamma;

v_expansion=engine_kinematics(bore,stroke,rc,c_rod_length,0,180);

p_expansion=const./v_expansion.^gamma;

% cal p4

p4=p3/(rc^gamma);

v4=v1;

hold on

plot(v_compression,p_compression,'color','r');

plot([v2 v3],[p2 p3],'color','r');

plot(v_expansion,p_expansion,'color','r');

plot([v4 v1],[p4 p1],'color','r');

xlabel('Volume (m3)');

ylabel('Pressure[ N/m2)');

%calculating thermal efficiency of cylce

efficiency=1-(1/(rc)^(gamma -1));

display(efficiency);

Results

Fig 1 Pv Diagram of Bajaj Pulsar 150cc working on otto cycle.

Fig 2 Figure showing thermal efficiency of Bajaj Pulsar

References

1. Dynamic Analysis of Bajaj Pulsar 150cc Connecting RodUsing ANSYS 14.0 by Amit Kumar1, Bhingole P.P and Dinesh Kumar2

2. http://mechteacher.com/otto-cycle-air-standard-efficiency-derivation/