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Copy of Advancement of Car Tec

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Sanad Jaradat

on 10 November 2015

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Transcript of Copy of Advancement of Car Tec







Palestine Polytechnic University
Birzeit University
College of Engineering & Technology
Mechanical Engineering Department
Graduation Project

Developing Training Module on Embedded Systems Applications in Automotives

Project team

PPU BZU
Sanad Jaradat Shadi Khalil
Sameer Salhab Mazen Abu Warrad‎
Rafaat Sharawi Majd Masalmah

Supervisors
PPU BZU
Dr. Momen Sughayyer Dr.Ahmad Abu Hanea


Historical Development of Automotive Electronics
Project Problem
- In Palestine the currently employed technicans in the field of automotive maintanance are not prepared to deal with the embedded systems applications in automotives according to need assesment done with the fram work CODE project .

- Currently offered high education programs do not cover this practicular topics .
Project Idea
- To develop training module for student and graduate on embedded system applications in automotive.

- The training module should cover theoritical and practical parts asbects of embedded systems.
Time Table for 1st simester
Time Table for 2nd simester
Embedded system application

The main systems are :

1- Engine management.
2- Antilock brake system ABS .
3- Electronic stability program ESP control including steer by wire.
4- Steering-Control System .
5 -Adaptive Cruise Control (ACC).
6- Electronic control transmission (ECT).
7- Other systems : suspension , air condition , seats , lighting ,
navigation , etc...... .

engine management
Engine management system include many features :

Fuel-injection control (A/F ratio).
Exhaust gas recirculation EGR control.
Ignition timing control in SI engines , or injection timing control in CI engines .
Idle-speed control.
Power train control include transmission control.
Knock control.
Air–Fuel Ratio Control
EGR control
Power train control
Knock Control
Adaptive Ignition Control
-Principle of adaptive is that the best engine torque is achieved when combustion produces maximum cylinder pressure just after TDC
Number of ECUs (CAN/MOST/LIN) with years
stability control system
Three types of stability control systems have been proposed and developed for yaw control:

1- Differential Braking systems
2- Steer-by-Wire systems
3- Active Torque d systems

- Allows Wheels to maintain traction and prevents skidding.
ESP control
ESP is of assistance to the driver in:

- correcting oversteering or understeering

- stabilizing the car during sudden
maneuvers

- enhancing handling on road obstacles .

- improving traction on slippery or icy
roads.
- Electric Power Steering (EPS) is the
latest system in which the electric motor
(“E-motor”) is attached directly to the
steering gearbox without a hydraulic
system.

- EPS is active only during the actual
steering process.


Adaptive Cruise Control (ACC)
- Allows a vehicle’s to adapt the vehicle's
speed to the traffic environment used a
radar system attach to the front of vehicle .

- The method by which the ACC vehicle's
speed is controlled is via engine throttle
control and limited brake operation

Thanks for attention
project overview
1. Introduction.
2. Historical development of automotive electronics .
3. Project problem.
4. Project idea .
5. Thesis of project.
6. Methodology and Implementation Plan and Time
Table.
7. Project estimated budget.

Why embedded system produced ?
Today’s electrical and electronic devices become more economic and reliable, these features help in enhancing :
- increasing safety.
- reducing emissions.
- improving fuel consumption.
- better drivability.
- passenger comfort.
Automotive Embedded Network
Outline

-Project overview.

-Vehicle system applications.

-Vehicle communication networks and the protocols.

-Theoretical and practical asbects of propose training
module .


CAN bus (Controller Area Network )

TTCAN Protocol(Time-Triggered CAN)

Flex Ray Protocol

VAN(Vehicle Area Network )

TT Networks(Time-Triggered - Event-Triggered)

Safe-by-Wire

- Safe-by-Wire Plus

Automotive Open System Architecture (AUTOSAR)
BSW(Basic Software Layer)

RTE (Runtime environment)

CAN bus (Controller Area Network)
CAN bus layers
Data link layer

Physical layer

Object layer

Transfer layer

Application layer
CAN bus representation
Sending node (station)

Receiving node (station)

Values of the bus

Bit rate of the bus

Information directed

CAN bus nodes
CAN bus Message Transfer
ELECTONIC STABILITY PROGRAM (ESP)
Introduction
ESP is an active safety technology that assists the driver to keep the vehicle
on the intended path and thereby helps to prevent accidents.

ESP is especially effective in keeping the vehicle on the road and mitigating
rollover accidents which account for over 1/3 of all fatalities in single vehicle accidents.

ESP: Past, Present, and Future
- The history of vehicle stability control can be followed simply by investigating Bosch’s contributions to vehicle electronic systems over the past 25 years as in the Table.

Vehicle Stability Timeline
ESP decides:

What wheel to brake or accelerate and to what extent.
Whether engine torque is reducedز
Whether the gearbox SX control unit is activated

Design and function of ESP
Component of system
1- ABS control unit with EDL/TCS/ESP J104.
2 - Steering angle sender G85.
3 - Lateral acceleration sender G200.
4 - Yaw rate sender G202.
5 - Lateral acceleration sender G200 Yaw rate
sender G202.
6 - Brake pressure sender G201.
7 - Button for TCS/ESP E256.
8 - The hydraulic pump for driving dynamic control
V156.
9 - The hydraulic unit.

Ignition-timing embedded system
Spark Plug
Two electrodes
-Center Electrode
-Ground Electrode.

Fuel air mixture ionized due to
the high voltage difference between the two electrode

Ignition coils
-Depends on furrier Low .

-12 volts car battery connected to the primary windings.

-thousands volts goes to the central electrode .

-all what we need to do is to close the switch .

Electric Circuit used
- The switch used is the
MOSFET Transistor

- If the gate gets a signal ,
the switch close .

- The gate signal comes
from the arduino .

Microcontroller ( Arduino )
- Complete computer used in
embedded applications .

- Gets signals form the sensors .

- Doing the computations ( taking
the decision ).

- Sends signals to the actuators .

Complete System
-Crank Shaft position sensor sense the position of the Crank shaft .

-sensor sends the information to the microcontroller .

- Microcontroller distributes the sparks to the proper cylinder .

Diagnosis and interface
The diagnosis of spark timing system is very simple, the detecting of the spark ignition is done by potting a temperature sensor at the top of the spark plug. This sensor detect if the spark is ignited or not. The sensor sends a signal to the microcontroller which is Arduino as an example, and the microcontroller sends the data which are shown as the number of spark ignition for each spark plug.

Anti-lock brake system (ABS)
Steering-Control System for Electric-Power Steering
(EPS)
What ESP do ?
Full transcript