Development of a Fuel Injector for Compressed Natural Gas

The injector was developed to operate in multi-point, port fuel injection system for multi-fuel vehicles. It is controlled by the same Engine Control Module of the vehicle, with no need of additional controllers/emulators, allowing total integration with vehicle's system. All control features and resources are permanently active, ensuring the best performance in emissions, drivability and diagnostics, independently of the fuel being used. This paper describes the functional requirements for this component, the development stages, the resources used in each stage, and results obtained in functional performance of injectors and the system effects in regards to exhaust emissions and engine performance.