1 Design of Gasoline engine control system based on FPGA midterm presentation Presented By: Sameh Damuni Sameh Damuni Firas Khair Firas Khair Instructor: Moni Orbach Moni Orbach 10/1/2007

2 Project Goal Implementation of new generation gasoline engine control system based on FPGA. Implementation of new generation gasoline engine control system based on FPGA. The system will be able to control engine in real time. The system will be able to control engine in real time. The system will work based on information that it gets from varied sensors. The system will work based on information that it gets from varied sensors.

3 Done till now: Building a block diagram for the ECU system. Building a block diagram for the ECU system.block diagram block diagram Collecting and studying data about all the engine sensors. Collecting and studying data about all the engine sensors. Studying LabView and VHDL(basic level). Studying LabView and VHDL(basic level).LabView Setting a basic time graph for the injectors and plugs signals, and building a diagram showing how the pistons work. Setting a basic time graph for the injectors and plugs signals, and building a diagram showing how the pistons work.basic time graph diagrambasic time graph diagram ■ Setting the engine sensors lookup tables. lookup tables lookup tables

4 LabView LabView is a graphical development platform designed for engineers usage : LabView is a graphical development platform designed for engineers usage : -It creates tests, measurements, and control applications with graphical programming. -It creates tests, measurements, and control applications with graphical programming.

5 In this project we will use it to implement the state diagrams, that we will build in the coming few weeks. In this project we will use it to implement the state diagrams, that we will build in the coming few weeks. We will also use the LabView FPGA module to implement the ECU we are designing. We will also use the LabView FPGA module to implement the ECU we are designing.

6 Basic Plugs and Injectors signals:

7 Pistons diagram:

Lookup tables: (V) 5 D4D4 A3A3 O2O2 L1L1 RPM 5ms4ms3ms2ms1ms ms8ms6ms4ms2ms ms12ms9ms6ms3ms ms16ms12ms8ms4ms ms20ms15ms10ms5ms ms24ms18ms12ms6ms6000 CTS FactorCTS(volt) OS FactorOS(volt) MAPS oxygen sensor CTS Mass airflow sensor MAS FactorMAS(volt) TPS TPS FactorTPS(volt)

9 Block diagram for the ECU

10 This unit calculates the pulse width of each signal of the injectors, by multiplying the base pulse width with the factors we get from the lookup tables. P.W.= X(basic) * OS factor * CTS factor * MAS factor * TPS factor MAS factor * TPS factor The X(basic) is calculated by the MAPS and RPM lookup table (in msec). B.W. Block

11 This unit will generate the control signals for the plugs and injectors. The signals frequency will be set using the value of the RPM input. The CPS sets when to give each pulse and to which injector according to the pistons diagram. The pulse width of the generated injectors signals is supplied to this unit. Basic

12 Scheduling 14/1-20/1: Setting the Transmission Functions for the sensors. 21/1-10/2: Simulating the sensors Transmission Functions on LabView. 11/2-end of semester presentation :Setting and simulating the engine Transmission Functions on LabView.

13 Thank You!!