Vehicular cleaning system, and cleaning method for same

A vehicle cleaning system that removes foreign matter from a cleaning subject of a vehicle, the vehicle cleaning system comprising:

• an air pump driven to generate an air jet;
• a washer pump driven to supply cleaning liquid;
• an ejection nozzle that sprays the cleaning subject with a gas-liquid fluid mixture, which includes the air jet and the cleaning liquid;
• an air jet generator including the air pump and a valve device,
• wherein the air jet generator is configured to generate the air jet that has a high pressure and is pulsed based on an action of the valve device that accumulates pressure until compressed air supplied from the air pump reaches a pressure that is higher than a discharge pressure of the air pump and, subsequent to the pressure accumulation, discharges the compressed air toward a downstream side;
• a cleaning liquid reservoir including a chamber, which stores the cleaning liquid supplied from the washer pump, and is configured to allow the cleaning liquid stored in the chamber to be discharged for mixing with the air jet;
• and
• a mixture outlet configured to spray the cleaning subject with the gas-liquid fluid mixture, which includes the high-pressure pulsed air jet generated by the air jet generator and the cleaning liquid received from the cleaning liquid reservoir, from the ejection nozzle,
• wherein the air jet generator further includes:
• a valve including a valve body that closes an intake passage of the compressed air and accumulates pressure until the compressed air supplied from the air pump reaches a pressure that is higher than the discharge pressure of the air pump;
• and
• an auxiliary mechanism configured to leak the compressed air from the intake passage when pressure is accumulated in the valve so as to accumulate pressure with leakage of the compressed air at a leaked side, open the valve body based on both of the pressures accumulated in the intake passage and the leaked side, output the pressure-accumulated compressed air from the intake passage to a discharge passage when the valve body opens, and close the valve body again upon the output of the compressed air to the discharge passage so as to allow for pressure accumulation in the intake passage.

A vehicle cleaning system that removes foreign matter from a cleaning subject of a vehicle, the vehicle cleaning system comprising:

• an air pump driven to generate air jet;
• a washer pump driven to supply cleaning liquid;
• an ejection nozzle that sprays the cleaning subject with a gas-liquid fluid mixture, which is a mixture of the air jet and the cleaning liquid;
• an air jet generator including the air pump and a valve device, wherein the air jet generator is configured to generate the air jet that has a high pressure and is pulsed based on an action of the valve device that accumulates pressure until compressed air supplied from the air pump reaches a pressure that is higher than a discharge pressure of the air pump and, subsequent to the pressure accumulation, discharges the compressed air toward a downstream side;
• a cleaning liquid inlet configured to draw in the cleaning liquid that is supplied from the washer pump;
• a mixture outlet configured to spray the cleaning subject with the gas-liquid fluid mixture, which is a mixture of the high-pressure pulsed air jet generated by the air jet generator and the cleaning liquid received from the cleaning liquid inlet, from the ejection nozzle;
• and
• check valves respectively arranged at a downstream side of the valve device in the air jet generator and in a passage of the cleaning liquid inlet.