Development and Evaluation of Schematic Simulation Board for Automotive EFI System Trainer

Objectives: In this study is to evaluate the possibility of introducing innovation to the existing Electronic Fuel Injection (EFI) by developing a Schematic Simulation Board (SBB) as an additional accessory. Methods: In this innovation, a Toyota 4A-FE engine (Japan surplus) trainer is used. The schematic diagram of the EFI trainer is determined since appropriate service manual was unavailable. The SBB is then developed and integrated to the EFI trainer. Possible laboratory and learning activities are then identified based on the capabilities of the trainer. Lastly, an evaluation on the usability and acceptability on the integration of SSB to an EFI trainer is conducted based on pre-determined criteria. Findings: The enhanced trainer has a very unique design in which the laboratory set-up procedures can be accomplished with greater accuracy in less time due to its plug and unplug features. It is more presentable because the component assemblies and wiring connections are properly fitted. It can also provide consistent performance and has an easy access for maintenance and servicing in the future. With the enhanced trainer, several laboratory activities related to EFI systems can be easily undertaken. Among these are demonstration of EFI system operation, testing EFI system individual circuit components, fault simulation and troubleshooting of EFI system failure, and many other laboratory activities. From the evaluation conducted, majority of the respondents strongly agreed on the usability and acceptability of the SSB. Application/Improvements: With the SSB, it is expected that the principles and operation of EFI system can be efficiently explained and understood by an average user and can be presented and demonstrated in a simplified manner.