HO CHI MINH CITY UNIVERSITY OF TECHNOLOGY AND EDUCATION
FACULTY FOR HIGH QUALITY TRAINING

GRADUATION PROJECT

DESIGN AND SIMULATION THE ELECTRIC BUS

HOANG VAN BONG
Student ID: 19145137
HUYNH THANH DAT
Student ID: 19145171
Major: AUTOMOTIVE ENGINEERING
Advisor: HUỲNH QUỐC VIỆT, MS.

Ho Chi Minh City, July 3, 2023

THE SOCIALIST REPUBLIC OF VIETNAM
Independence – Freedom– Happiness

-Ho Chi Minh City, July 3, 2023

GRADUATION PROJECT ASSIGNMENT
Student name: Hoang Van Bong

Student ID: 19145137

Student name: Huynh Thanh Dat

Student ID: 19145171

Major: Automotive Engineering

Class: 19145CLA

Advisor: M.S Huynh Quoc Viet
Date of assignment: 13/02/2023

Date of submission: 03/07/2023

1. Project title: DESIGN AND SIMULATION THE ELECTRIC BUS
2. Initial materials provided by the advisor:
−
−
−
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ADVISOR
5SORT-2004-ENG
Bao-cao-esp-va-advisor
Modern electric, hybrid electric, and fuel cell vehicles 3rd-ed

3. Content of the project:
Chapter 1: INTRODUCTION
Chapter 2: LITERATURE SURVEY
Chapter 3: ELECTRIC BUS CALCULATION AND DESIGN
Chapter 4: SIMULATION AND RESULT
Chapter 5: CONCLUSION
4. Final product:
− Model Simulation Electric Bus on ADVISOR
CHAIR OF THE PROGRAM

ADVISOR

(Sign with full name)

(Sign with full name)

THE SOCIALIST REPUBLIC OF VIETNAM
Independence – Freedom– Happiness



EVALUATION SHEET OF
DEFENSE COMMITTEE MEMBER
Student name: Hoang Van Bong

Student ID: 19145137

Student name: Huynh Thanh Dat

Student ID: 19145171

Major: Automotive Engineering
Project title: DESIGN AND SIMULATION THE ELECTRIC BUS
Name of Defense Committee Member:
..................................................................................................................................................

EVALUATION
1. Content and workload of the project
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............................................................................................................................................

2. Strengths:
........................................................................................................
...

...
YIWEI NEW ENERGY
AUTOMOBILE
CO.,
LTD.,
[Online].
Available:
https://1vtruck.en.alibaba.com/product/1600276919138828602703/high_torque_50hp_300hp_electric_e_bus_vehicle_ev_ac_traction
_motor_and_controller_engine_for_car_truck_drive_system_parts_kit.html.
[52] C. W. L. Y. W. a. K. S. Kwo Young, Electric Vehicle Battery Technologies,
Modern Power Networks, USA, 04 April 2017.

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LIST OF ACRONYMS
FT

is tractive effort of vehicle

FR

is resistance force of vehicle

FRR

is rolling resistance force of vehicle

Fdrag

is gravitational force (gradient force) of vehicle

Fgrad

is gradient resistance

M

is total mass of vehicle (kg)

a

is vehicle acceleration (m/s2)

FR

is rolling resistance force of vehicle

Cf

is rolling resistance coefficient

g

is gradient resistance

M

is total mass of vehicle (kg)

FD

is aerodynamic drag force of vehicle

ρa

is density of air (kilogram per meter cube)

Af

is front area of vvehicle

Cd

is airodynamics drag coefficient

v

is velocity of vehicle

vw

is velocity of the wind

g

is gradient resistance

M

is total mass of vehicle (kg)

θ

is slope angle (deg)

ig

is the gear ratio of the transmission defined as ig = Nin/Nout (Nin input rotating speed, Nout - output rotating speed).

i0

is the gear ratio of the final drive.

ηt

is the efficiency of the driveline from the power plant to the drive
wheels.

Tm

is the torque output from the power plant.
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Tm

is the motor torque (Nm)

Nm

is motor speed (rpm)

ig

is gear ratio of transmission

i0

is gear ratio of final drive

ηt

is the efficiency of the whole driveline from motor to the driven
wheel

rd

is the radius of the drive wheel

V

is vehicle speed

Np

is the transmission rotating speed (RPM), which is equal to the
engine speed in a vehicle with a manual transmission and the
turbine speed of a torque converter in a vehicle with an automatic
transmission

V

is vehicle speed

Np max

is the maximum speed of the electric motor.

M

is the total mass of the vehicle in kg

δ

is the rotational inertia factor

ta

is the expected acceleration time in second

vb

is the vehicle speed corresponding to the motor-base speed in m/s

vf

is the final speed of the vehicle during acceleration speed in m/s

g

is the acceleration of gravitational constant in 9.8 m/s2

fr

is the rolling resistance coefficient

ρa

is density of air (kilogram per meter cube) kg/m3

Cd

is airodynamics drag coefficient

Pt

is the tractive power in W

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