Vehicle supercharging system and control method thereof

A control method of a vehicle supercharging system that supplies air to an engine and a transmission by using a dual-turbine electric supercharger, the control method comprising:

• determining, by a controller, whether an engine boosting control condition, a transmission cooling control condition, and a transmission warming control condition are satisfied based on a driving state of a vehicle;
• in response to the engine boosting control condition being satisfied, operating, by the controller, the dual-turbine electric supercharger, and supplying air through an engine-side supercharging path part from an air supplying line to a first turbine of the dual-turbine electric supercharger, where the engine-side supercharging path part is branched out from the air supplying line;
• and
• in response to the transmission cooling control condition or the transmission warming control condition being satisfied, operating, by the controller, the dual-turbine electric supercharger, and supplying air through a transmission-side supercharging path part to a second turbine of the dual-turbine electric supercharger.

A vehicle supercharging system, comprising:

• an engine configured to generate power to drive a vehicle;
• a transmission;
• a dual-turbine electric supercharger configured to compress air by rotational force of a motor and including a first turbine and a second turbine;
• an air cleaner filter configured to induce external air and including an engine-side air cleaner filter and a transmission-side air cleaner filter;
• an engine-side supercharging path part that branches from an air supplying line connected to the engine-side air cleaner filter and passes through the dual-turbine electric supercharger, and then is again connected to the air supplying line;
• a transmission-side supercharging path part that is connected to the transmission-side air cleaner filter, passes through the dual-turbine electric supercharger, and then is connected to the transmission;
• and
• a controller that operates the dual-turbine electric supercharger based on a driving state of the vehicle and that individually controls the engine-side supercharging path part for boosting the engine and the transmission-side supercharging path part for cooling or warming the transmission through control of valves provided in the engine-side supercharging path part and the transmission-side supercharging path part.