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: 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.

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.