Abstract: Revving an engine may be helpful in various contexts, such as when servicing the vehicle. For example, in some types of services, a cleaning agent may be introduced into the intake and surrounding regions of an engine, and the engine may be revved to reduce a likelihood that the cleaning agent might puddle. In some instances, a device can be positioned within a vehicle interior and can be used to automatically rev the vehicle engine by depressing on the vehicle throttle.

Abstract: A method of determining the location of an object in a camera field of view is disclosed. The method may utilize a camera system that includes a digital video camera and a computer that runs image analysis software for analyzing images received from the camera. The image analysis software is configured to isolate pixel groups in each image. The method includes the steps of locating an object in the camera's field of view in which the object is represented by a set of pixels; identifying the centroid of the set of pixels representing the object; and calculating the location of the object relative to the camera based upon known parameters including the focal plane and camera lens location.

Abstract: This application describes a sprayer assembly that can attach to a variety of different types of pre-filled, fluid containers (e.g., non-pressurized fluid containers) for holding the fluid to be sprayed. For example, the sprayer assembly can include a sprayer-head assembly for attaching to a container of fluid, a canister for holding the container of fluid, or any combination thereof In addition, the sprayer assembly can be connected to a variety of different types of pressurized air sources. The sprayer-head assembly can include a nozzle assembly (e.g., fluid uptake tube, valve, and nozzle head), as well as a trigger for actuating the nozzle assembly.