Methods for cleaning and / or maintenance of vehicles, wherein a mixture of cleaning and / or care agent and water is homogenized by means of ultrasound.

摘要

The invention relates to a method for cleaning and / or care of motor-driven vehicles. The vehicle is a cleaning and / or care device and supplied with at least one cleaning and / or care agent in aqueous solution, together form a liquid mixture in a predetermined desired concentration, treated. Preliminary, the cleaning and / or care agent is mixed with the water to achieve the desired concentration and then fed to a pre-treatment unit (1). It flows through a container (3) with at least one ultrasonic transducer (11) at its outer periphery. The housing (13) of the container (3) as a membrane is formed which transmit ultrasonic vibrations of a frequency of about 20-140 kHz on the mixture of cleaning and / or care agent and water by means of which in the flow through the container (3) and the mixture is thereby homogenized by ultrasound, before the vehicle is sprayed with the homogenized liquid mixture. The invention also relates to a pre-treatment unit for carrying out the said method.