EB-561 Electronic Fuel Ignition Demonstrator

Innovative Technologies in Education (ITE)

EB-561 Electronic Fuel Ignition Demonstrator

View product pdf document
This system is designed to show how various sensors and actuators operate in the smart cars of today. Experiments illustrate the principles of operation of EFI and related systems. Faults are inserted through the PUZ-2000 and are interactive with courseware. The student is tested on his/her understanding of each system. In a hands-on learning environment, students gain skill in the following measuring equipment: 20 MHz dual trace oscilloscope, DMM 3½ digits, and pocket digital engine analyzer.

Panel Components, controls and indicator devices include:

Idle air control: start push button and 0/16/32 open/close bypass steps rotary selector
Engine speed rotary display: 10 elements and pulse output test point

Overrun fuel cut off switch and indicator
Fuel injector with actuating pulses test point

Injector actuation pulses: 32/64/128/256/512 and continuous selector and activating push-button
Manual vacuum pump to test injector equivalent fuel displacement

Fuel injection duration rotary selector: 2 to 16 milliseconds
Throttle body simulator including a suction fan and mass air flow (MAF) sensor with test point

System configuration rotary switch with 11 positions
Throttle position switches for idle and full load conditions

02 sensor voltage and simulated 5 or 6 msec injection time
Coolant temperature simulator with temperature sensor

Vacuum meter
Main switching relay

Injector opening duration: 16 bar segments (1 to 16 msec)
Idle air control including a stepper motor and air bypass limit switch

Tachometer: 10 elements (250 to 2500 rpm)
02 sensor simulator

Student experiments on the computer-interfaced Electronic Fuel Ignition Demonstrator include:

Relation of injector opening duration to quantity of fuel injected
Effect of air temperature on quantity of fuel injected

Determining injector opening time with an oscilloscope
Calculating injector opening time with a tachometer and dwell meter

Throttle position sensor output signal
Throttle position switch output signal

MAF sensor operation, voltage and frequency output signals
Injection duration at various engine speeds, temperatures and loads

Analyzing injection opening pattern on an oscilloscope
Comparing injector activation signal with various input conditions

Idle air control step motor operation and control
Effect of ignition pulses on main switching relay

Overrun fuel cut off
02 sensor operation