High-Speed Imaging of Fuel Injection in Automotive Engines

An important observational method. As an example, gasoline being injected from the injector and adhering to the cylinder walls is considered to be a cause of fine particles with a diameter of 2.5 micrometers or smaller (PM2.5), harmful particles contained in exhaust gas. In addition, ensuring that the gasoline is refined and homogenized during injection is important in regards to improving fuel efficiency. This article introduces images of fuel injection by an injector, and the collision of the injected spray against a wall surface, obtained using the HPV-X2 high-speed video camera.