System and method for measuring tip velocity of sprayed fuel
AssigneeHyundai Motor Company
InventorYoung-Kug Park
Life of this patent
Estimating the term…
Abstract
A system and method for measuring tip velocity of sprayed fuel in an engine includes a light source, a lens, a Charge-Coupled Device (CCD) camera, and a control unit. The lens allows light, which is emitted from the light source, to enter into a combustion chamber. The CCD camera photographs the shapes of the dispersion of the sprayed fuel. The control unit causes the light source to emit light two times by controlling the light source, acquiring a single frame image of the shapes of the dispersion of the sprayed fuel by controlling the CCD camera, and calculates the tip velocity of the sprayed fuel by processing the acquired image.
Claims7
A system for measuring tip velocity of sprayed fuel in an engine, comprising:
- a light source;
- a lens for allowing light emitted from the light source to enter into a combustion chamber;
- a Charge-Coupled Device (CCD) camera configured to provide images of dispersion shapes of the sprayed fuel;
- and
- a control unit controlling the light source to emit light at least two times during an exposure period of the CCD camera, acquiring a single frame image comprising the dispersion shapes of the sprayed fuel captured by the CCD camera at each light emission, and calculating the tip velocity of the sprayed fuel by processing the acquired single frame image.
A method for measuring tip velocity of sprayed fuel in an engine, comprising:
- emitting light twice toward a combustion chamber into which fuel is sprayed, with a time interval between the two light emissions;
- photographing dispersion shapes of the sprayed fuel during the two emissions of light, and acquiring a single frame image of the dispersion shapes of the sprayed fuel from the two emissions of light;
- dividing the single frame image into first and second dispersion images based on brightness values, from the single frame image;
- obtaining a first boundary between the first dispersion image and a background, and a second boundary between the second dispersion image and the background;
- obtaining a movement distance from the obtained boundaries;
- and
- calculating the tip velocity of the sprayed fuel by dividing the movement distance by the time interval between the two light emissions.
Dependencies are inferred from the claim text.