A device, either physical or software-based, designed to determine the volume of fluid that a fuel injector dispenses over a specific period. This tool typically accepts input parameters such as injector size, engine horsepower, number of cylinders, and target fuel pressure. The resultant output indicates the required fuel injector capacity to adequately supply an engine’s fuel demands under various operating conditions.
Precise determination of fuel injector capacity is essential for optimal engine performance, efficiency, and longevity. Insufficient fuel delivery can lead to lean conditions, potentially causing engine damage. Conversely, excessive fuel delivery can result in rich conditions, reducing fuel economy and increasing emissions. Historically, mechanical methods were employed to estimate injector size, but modern calculators offer greater accuracy and accommodate a wider range of engine configurations and fuel types.