Air inlet arrangement for an air compressor

Abstract

An air inlet arrangement for an air compressor intended to be arranged on a vehicle includes an air inlet tube for providing air to an air compressor, and an air intake conduit for providing air to an internal combustion engine. The air inlet tube is provided with an end portion having an inlet opening and is mounted to the air intake conduit. The end portion is inserted in the air intake conduit in such a way that the inlet opening is arranged inside the air intake conduit, and the inlet opening is arranged to face towards the main direction of the intended air flow in the air intake conduit.

1 . An air inlet arrangement for an air compressor intended to be arranged on a vehicle, comprising an air inlet tube for providing air to an air compressor, and an air intake conduit for providing air to an internal combustion engine, the air inlet tube being provided with an end portion having an inlet opening and being mounted to the air intake conduit, wherein the end portion of the air inlet tube is inserted in the air intake conduit in such a way that the inlet opening is arranged inside the air intake conduit, and the inlet opening is arranged to face towards a main direction of an intended air flow in the air intake conduit. 
     
     
         2 . An air inlet arrangement according to  claim 1 , wherein a longitudinal extension of the end portion of the air inlet tube, in a direction away from the air intake conduit, has one extension component which is perpendicular to the main direction of the intended air flow in the air intake conduit and a second component which has a same direction as the main direction of the intended air flow in the air intake conduit. 
     
     
         3 . An air inlet arrangement according to  claim 2 , wherein the end portion of the air inlet tube is arranged at an angle α relative to the main direction of the intended air flow in the air intake conduit, the air inlet tube angle α being in the interval 10°<α< 80 °. 
     
     
         4 . An air inlet arrangement according to  claim 3 , wherein the air inlet tube angle α is in the interval 20°<α<70°. 
     
     
         5 . An air inlet arrangement according to  claim 3 , wherein the air inlet tube angle a is in the interval 30′<α<60°. 
     
     
         6 . An air inlet arrangement according to  claim 3 , wherein the air inlet tube angle α is substantially 45°. 
     
     
         7 . An air inlet arrangement according to  claim 1 , wherein the inlet tube is designed with a bevelled end portion in such a way that a main extension direction of the end surface of the inlet tube and a longitudinal center line of the inlet tube form an end portion angle β, where 0<β<90°. 
     
     
         8 . An air inlet arrangement according to  claim 7 , wherein the end portion angle β is in the interval 20°<β<70°. 
     
     
         9 . An air inlet arrangement according to  claim 7 , wherein the end portion angle β is in the interval 30°<β<60°. 
     
     
         10 . An air inlet arrangement according to  claim 7 , wherein the end portion angle β is substantially 45°. 
     
     
         11 . An air inlet arrangement according to  claim 1 , wherein the end portion is arranged in such a way that a geometrical plane defined by the inlet opening is arranged at an angle θ relative to the main direction of the intended air flow in the air intake conduit, the inlet opening angle θ being in the interval 10°<θ< 170 °. 
     
     
         12 . An air inlet arrangement according to  claim 11 , wherein the inlet opening angle θ is in the interval 30°<θ< 150 °. 
     
     
         13 . An air inlet arrangement according to  claim 11 , wherein the inlet opening angle θ is in the interval 45°<θ< 135 °. 
     
     
         14 . An air inlet arrangement according to  claim 11 , wherein the inlet opening angle θ is in the interval 60°<θ< 120 °. 
     
     
         15 . An air inlet arrangement according to  claim 11 , wherein the inlet opening angle θ is substantially 90°. 
     
     
         16 . An air inlet arrangement according to  claim 1 , wherein a point of the inlet opening of the air inlet tube which is situated closest to a wall of the air intake conduit, is situated at a distance from an inner surface of the wall of the air intake conduit at a position where the air inlet tube is mounted to the air intake conduit. 
     
     
         17 . An air inlet arrangement according to  claim 16 , wherein the distance between the point of the inlet opening and the intake conduit wall is in the interval D/8<B<7D/8, where D is a diameter or corresponding measure of the air intake conduit. 
     
     
         18 . An air inlet arrangement according to  claim 16 , wherein the distance between the point of the inlet opening and the intake conduit wall is in the interval D/4<B<D/2, where D is a diameter or corresponding measure of the air intake conduit. 
     
     
         19 . An air inlet arrangement according to  claim 1 , wherein the air inlet tube is mounted to a curved portion of the air intake conduit. 
     
     
         20 . An air inlet arrangement according to  claim 1 , wherein the end portion of the air inlet tube is a funnel. 
     
     
         21 . An air compressor system for a vehicle, comprising an engine and air compressor driven by the engine, and an air inlet tube for providing air to the air compressor, and an air intake conduit for providing air to the engine, the air inlet tube being provided with an end portion having an inlet opening and being mounted to the air intake conduit, wherein the end portion of the air inlet tube is inserted in the air intake conduit in such a way that the inlet opening is arranged inside the air intake conduit, and the inlet opening is arranged to face towards a main direction of an intended air flow in the air intake conduit. 
     
     
         22 . A heavy vehicle comprising an air inlet arrangement according to  claim 1 . 
     
     
         23 . An air inlet arrangement for an air compressor in a vehicle, the arrangement comprising an air inlet tube for the air compressor, and an air intake conduit for an internal combustion engine, wherein the air inlet tube is provided with an end portion having an inlet opening and is mounted to said the air intake conduit, wherein the inlet opening is configured in such a way as to provide a first air flow in the air inlet tube towards the air compressor, where this first air flow is created by a second air flow inside the air intake conduit towards the engine, and the air inlet tube is inserted in the air intake conduit in such a way that the inlet opening is positioned inside the air intake conduit.