A warm-up air system to aid cold start up is provided. The system includes a turbine with electrical heaters linked to a throttle body or to an air sending tube to the throttle body forming a warmed up air circulation circuit. The system also includes valves controlled by an electronic unit.
대표청구항▼
1. Air warm-up system to aid cold start-up of a combustion engine, the system comprising: a filter (20) for filtering fresh air received from outside of the engine;a throttle body (10c) for receiving filtered air from the filter (20) via an air tube (25); andan intake manifold (10) downstream the th
1. Air warm-up system to aid cold start-up of a combustion engine, the system comprising: a filter (20) for filtering fresh air received from outside of the engine;a throttle body (10c) for receiving filtered air from the filter (20) via an air tube (25); andan intake manifold (10) downstream the throttle body (10c) for receiving a measured amount of air and for feeding the measured amount of air to the cylinders of the engine,wherein the air feeding system also comprises:a turbine (100) for selectively receiving air from the filter (20) or from the intake manifold (10);a first valve (201) placed in the air tube between the filter and the throttle body;a second valve (202) placed in a tube (C) for selectively connecting a turbine outlet to the air tube at a point (E), downstream of the first valve;a third valve (203) placed in the tube (C) for selectively connecting the turbine outlet to the exit of the throttle body;a fourth valve (204) placed in a tube (103) for selectively connecting the intake to the turbine;a fifth valve (205) for selectively feeding air from the filter to the turbine, the first valve being placed at a tube (A) connecting the air tube to the turbine inlet (B); and,at least one electrical heater (101). 2. The air warm up system of claim 1, wherein the at least one electrical heater (101) is arranged in the outlet of the turbine (100). 3. The air warm up system of claim 1, wherein the turbine (100) and the first (201), second (202), third (203), fourth (204), and fifth (205) valves are controlled by an electronic control unit. 4. The air warm up system of claim 1, wherein recirculation of warmed up air before engine start up is made through a closed loop itinerary comprising the turbine (100), the second valve (202), the throttle body (10c), the intake manifold, the fourth valve (204), and returning to the turbine, the first and fifth valves being closed. 5. The air warm up system of claim 1, wherein recirculation of warmed up air before engine start up is made through a closed loop itinerary comprising the turbine (100), the third valve (203), the intake manifold, the fourth valve (204), and returning to the turbine, the first, second and fifth valves being closed. 6. The air warm up system of claim 1, wherein warmed up air feeding after engine start up is made through an open loop itinerary comprising the filter (20), the fifth valve (205), the turbine (100), the second valve (202), the throttle body (10c), the intake manifold and the cylinders, the first (201), second (202), and fourth (204) valves being closed. 7. Air warm-up system to aid cold start-up of a combustion engine, the system comprising: a filter (20) for filtering fresh air received from outside of the engine;a throttle body (10c) for receiving filtered air from the filter (20) via an air tube (25); andan intake manifold (10) downstream the throttle body (10c) for receiving a measured amount of air and for feeding the measured amount of air to the cylinders of the engine,wherein the air feeding system also comprises:a turbine (100) for selectively receiving air from the filter (20) or from the intake manifold (10);a first valve (201) placed in the air tube between the filter and the throttle body;a second valve (202) placed in a tube (C) for selectively connecting a turbine outlet to the air tube at a point (E), downstream of the first valve;a third valve (203) placed in the tube (C) for selectively connecting the turbine outlet to the exit of the throttle body;a fourth valve (204) placed in a tube (103) for selectively connecting the intake to the turbine;a fifth valve (205) for selectively feeding air from the filter to the turbine, the first valve being placed at a tube (A) connecting the air tube to the turbine inlet (B); and,at least one electrical heater (101), andwherein, after the engine is warmed up, the air feeding is made through the itinerary compressing the filter (20), the fifth valve (205), the turbine (100), the second valve (202), the throttle body (10c), and the intake manifold (10), the first, third and fourth valves being closed and the electrical heater being deactivated.
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