Compressed air engine assembly with complementary compressed air circuit

Abstract

An air-powered engine assembly uses compressed air as a complementary power source. The air-powered engine assembly includes an engine body ( 1 ), a multiple-column power distributor ( 2 ), a power equipment ( 4 ), a controller system ( 6 ), an intake speed control valve ( 23 ), a high pressure gas tank set ( 13 ), a constant pressure tank ( 16 ), an electronic control unit ECO ( 29 ) and a complementary compressed air circuit. The complementary compressed air circuit includes an air compressor ( 7 ), a condenser ( 11 ), a pressure limiting valve ( 702 ), sequence valve ( 705 ), an exhaust gas recycle tank ( 9 ), an electro-drive turbine unidirectional suction pump ( 19 ) and an exhaust gas muffler ( 22 ).

1 . An air-powered engine assembly which uses the compressed air as the complementary power source, which comprises: an engine body ( 1 ), the engine body including a cylinder ( 40 ), a cylinder head system ( 36 ), an intake pipeline ( 42 ), a discharge pipeline ( 27 ), a piston ( 51 ), a connecting rod ( 54 ), a crankshaft ( 56 ), a discharge camshaft ( 800 ), an intake camshaft ( 200 ), a front gear box system ( 43 ) and a back gear box ( 33 ); said piston ( 51 ) being connected to the crankshaft ( 56 ) via the connecting rod ( 54 ), said front gear box system ( 43 ) being adapted to transmit the movement of the crankshaft ( 56 ) and the discharge and intake camshafts ( 800 , 200 ), an air throat hole ( 402 ) for a compressed air intake and a discharge hole ( 272 ) for an exhaust gas discharge being provided on said cylinder head system ( 36 ); the air-powered engine assembly also includes a high pressure gas tank set ( 13 ) which is connected to an external charge device via a pipeline ( 14 ) and a constant pressure tank ( 16 ) which is connected to the high pressure gas tank set ( 13 ) via a pipeline ( 15 ), wherein the said air-powered engine assembly also includes an intake speed control valve ( 23 ) which is communicated with the constant pressure tank ( 16 ) via a pipeline ( 17 ), a controller system ( 6 ), a multiple-column power distributor ( 2 ) which is connected to the crankshaft ( 56 ) of the engine body ( 1 ), a power equipment ( 4 ) which is connected to the multiple-column power distributor ( 2 ) to receive the power which is passed over the crankshaft ( 56 ), an electronic control unit ECO ( 29 ) which controls the intake speed control valve on the basis of the detected signal of a sensor ( 24 , 242 ), and a complementary compressed air circuit which is connected to a discharge header ( 28 ) to complementally supply to the engine body ( 1 ) with the exhaust emissions of the discharge header ( 28 ). 
     
     
         2 . The engine assembly according to  claim 1 , characterized in that said engine assembly is a two-stroke engine. 
     
     
         3 . The engine assembly according to  claim 1 , characterized in that said complementary compressed air circuit includes an air compressor ( 7 ), an exhaust gas recycle tank ( 9 ), an electro-drive turbine unidirectional suction pump ( 19 ), an exhaust gas muffler ( 22 ), a condenser ( 11 ), a pressure limiting valve ( 702 ), wherein the exhaust gas enters the exhaust gas muffler ( 22 ) through the discharge header ( 28 ) and is drawn in the exhaust gas recycle tank ( 9 ) by the electro-drive turbine unidirectional suction pump ( 19 ), the exhaust gas accumulated in the exhaust gas recycle tank ( 9 ) being sent to the high pressure gas tank set ( 13 ) through the pressure limiting valve ( 702 ) after being compressed and pressurized by the air compressor ( 7 ) and after being cooled by the condenser ( 11 ). 
     
     
         4 . The engine assembly according to  claim 3 , characterized in that said complementary compressed air circuit further includes a sequence valve ( 703 ), when the pressure of the exhaust gas after pressurized by the air compressor ( 7 ) is less than 15 Mpa, said exhaust gas is directly sent to the constant pressure tank ( 16 ) through the sequence valve ( 703 ). 
     
     
         5 . The engine assembly according to  claim 4 , characterized in that said air compressor ( 7 ) is connected to the multiple-column power distributor ( 2 ) by a coupling, so the air compressor ( 7 ) is driven by the power transmitted from the multiple-column power distributor ( 2 ) to work for compressing the exhaust gas from the exhaust gas recycle tank ( 9 ). 
     
     
         6 . The engine assembly according to  claim 1 , characterized in that said controller system ( 6 ) includes a high pressure common rail constant pressure pipe ( 91 ), a controller upper cover ( 108 ), a controller mid seat ( 98 ) and a controller bottom base ( 97 ), the controller upper cover ( 108 ), the controller mid seat ( 98 ) and the controller bottom base being connected by a plurality of bolts removably and hermetically. 
     
     
         7 . The engine assembly according to  claim 6 , characterized in that a controller intake valve ( 92 ), a controller valve spring ( 94 ), an oil seal bush ( 99 ), a controller valve spring bottom base ( 97 ) and a controller valve seat ( 93 ) are mounted in said controller mid seat ( 98 ), said controller valve ( 92 ) being abutted against the controller valve seat ( 93 ) under a pre-action of the controller valve spring ( 94 ). 
     
     
         8 . The engine assembly according to  claim 7 , characterized in that a controller tappet ( 115 ) which controls the opening and closure of the controller valve ( 92 ) is provided in said controller bottom base ( 97 ), and the controller tappet ( 115 ) is actuated by the intake camshaft ( 200 ). 
     
     
         9 . A multiple-column power distributor used for an air-powered engine, characterized in that said multiple-column power distributor includes multiple stages, each stage all including a planetary gear ( 401 ), an inner gear ring ( 407 ) and a sun gear ( 405 ), wherein said planetary gear ( 401 ) is located between the inner gear ring ( 407 ) and the sun gear ( 405 ), and engages with the inner gear ring ( 407 ) through internal gearing and engages with the sun gear ( 405 ) through external gearing. 
     
     
         10 . The multiple-column power distributor according to  claim 9 , characterized in that said multiple-column power distributor ( 2 ) engages with a gear ring ( 31 ) on a flywheel ( 32 ) of the crankshaft ( 56 ) via the inner gear ring ( 407 ), so as to receive power from the crankshaft ( 56 ). 
     
     
         11 . The multiple-column power distributor according to  claim 10 , characterized in that the planetary gears ( 401 ) in a first stage ( 601 ) and a second stage ( 602 ) are connected by a planetary gear pin ( 403 ), the sun gears ( 405 ) in the second stage ( 602 ) and a third stage ( 603 ) is connected by a sun gear pin ( 406 ), the third stage ( 603 ) and a fourth stage ( 604 ) are connected by the planetary gear pin ( 403 ), the fourth stage ( 604 ) and a fifth stage ( 605 ) are connected by a sun gear pin ( 405 ). 
     
     
         12 . The multiple-column power distributor according to  claim 11 , characterized in that said planetary gear pins are connected to the planetary gears ( 401 ) by a smooth flat key ( 4021 ), so as to transmit movement of the first stage ( 601 ) to the second stage ( 602 ) or transmit movement of the third stage ( 603 ) to the fourth stage ( 604 ).