Variable-coordination-timing type self-cooling engine with variable-profile-camshaft

Abstract

The present invention provides a variable-coordination-timing type self-cooling engine capable of adjusting the initiation timings and the injected amount of each injection process according to the change in the combusting pressure with the variable-coordinate-timing system. The variable-coordination-timing system will regulate the air flow between each coordinate-channel and its associated power-cylinder to optimize the cooling effects, and the hot-combusting-medium in each power-cylinder will be mixed with a flow of compressed air at a controlled flow-rate and pressure, which prevents the hot-combusting-medium from charging into the primary-coordinate-channel and the secondary-coordinate-channel, thereby effecting the cooling effects of the self-cooling-16-process.

1 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft comprising:
 a) a primary-power-cylinder ( 210 ) and a secondary-power-cylinder ( 220 ) and a cooling-cylinder ( 230 ) operating in a  12 -stroke-sequence; said primary-power-cylinder ( 210 ) contains a reciprocating primary-piston ( 211 ), said secondary-power-cylinder ( 220 ) contains a reciprocating secondary-piston ( 221 ), said cooling-cylinder ( 230 ) contains a reciprocating cooling-piston ( 231 ); said three cylinders are constructed with a cooling-phase between 45 degree and 150 degree in order to perform the self-cooling-16-process;   b) the first 8 processes of said self-cooling-16-process are performed by said primary-power-cylinder ( 210 ) and said cooling-cylinder ( 230 ), which are the primary-intake-process, the first-recharge-process, the primary-compression-process, the first-cold-compression-process, the primary-hot-expansion-process, the first-injection-process, the primary-cold-expansion-process, the primary-exhaust-process;   c) the next 8 processes of said self-cooling- 16 -process are performed by said secondary-power-cylinder ( 220 ) and said cooling-cylinder ( 230 ), which are the secondary-intake-process, the second-recharge-process, the secondary-compression, the second-cold-compression-process, the secondary-hot-expansion-process, the second-injection-process, the secondary-cold-expansion-process, the secondary-exhaust-process;   d) the four strokes of said 12-stroke-sequence associated with said primary-piston ( 211 ) are the primary-intake-stroke, the primary-compression-stroke, the primary-power-stroke, the primary-exhaust-stroke; said four strokes associated with said primary-piston ( 211 ) will repeat in said primary-power-cylinder ( 210 ) every 720 degree of crankshaft rotation;   e) the four strokes of said 12-stroke-sequence associated with said secondary-piston are the secondary-intake-stroke, the secondary-compression-stroke, the secondary-power-stroke, the secondary-exhaust-stroke; said four strokes associated with said secondary-piston ( 221 ) will repeat in said secondary-power-cylinder ( 220 ) every 720 degree of crankshaft rotation;   f) the four strokes of said 12-stroke-sequence associated with said cooling-piston ( 231 ) are the first-recharge-stroke, the first-cooling-stroke, the second-recharge-stroke, and the second-cooling-stroke;   said four strokes associated with said cooling-piston ( 231 ) will repeat in said cooling-cylinder ( 230 ) every 720 degree of crankshaft rotation;   g) a variable-coordination-timing system and an engine control unit for controlling the process durations of the first-injection-process and the second-injection-process;   h) said variable-coordination-timing system includes a primary-coordinate-channel ( 260 ) and a secondary-coordinate-channel ( 280 );   i) said variable-coordination-timing system includes a first-input-valve ( 261 ) and a second-input-valve ( 281 ) for distributing the compressed-air of said cooling-cylinder ( 230 ) during the first-cooling-stroke and the second-cooling-stroke; the compressed-air of said cooling-cylinder ( 230 ) is directed into said primary-coordinate-channel ( 210 ) with said first-input-valve ( 261 ) during the first-cooling-stroke; the compress-air of said cooling-cylinder ( 230 ) is directed into said secondary-coordinate-channel ( 280 ) with said second-input-valve ( 281 ) during the second-cooling-stroke;   j) said variable-coordination-timing system includes a first-coordinate-valve ( 265 ) for opening an air-passage from said primary-coordinate-channel ( 260 ) to said primary-power-cylinder ( 210 ), thereby effecting the first-injection-process;   k) said variable-coordination-timing system includes a second-coordinate-valve ( 285 ) for opening an air-passage from said secondary-coordinate-channel ( 280 ) to said secondary-power-cylinder ( 220 ), thereby effecting the second-injection-process;     1 ) said variable-coordination-timing system includes a variable-profile-camshaft ( 250 ) and a profile shifter ( 251 ), said profile shifter ( 251 ) will shift the profiles of said variable-profile-camshaft ( 250 ) in contact with each of said first-coordinate-valve ( 265 ) and said second-coordinate-valve ( 285 ), thereby adjusting the actuation timings of said first-coordinate-valve ( 265 ) and said second-coordinate-valve ( 285 ) according to instruction signals from the engine control unit, such that said first-coordinate-valve ( 265 ) is only actuated after said primary-coordinate-channel ( 260 ) has an air-pressure pressure 15 psi higher than the combustion pressure in said primary-power-cylinder ( 210 ), and said second-coordinate-valve ( 285 ) is only actuated after said secondary-coordinate-channel ( 280 ) has an air-pressure 15 psi higher than the combustion pressure in said secondary-power-cylinder ( 220 );   m) the initiation timing of said first-injection-process ranges between 15 degree after the TDC of said primary-piston ( 211 ) and 10 degree before the TDC of said cooling-piston ( 231 ) during the first-cooling-stroke;   n) the initiation timing of said second-injection-process ranges between 15 degree after the TDC of said secondary-piston ( 221 ) and 10 degree before the TDC of said cooling-piston ( 231 ) during the second-cooling-stroke.   
     
     
         2 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft as defined in  claim 1 , wherein said engine control unit will control the initiation timing of each injection-process in order to prevent the hot-combusting-medium in said primary-power-cylinder and said secondary-power-cylinder to charge back into its associated coordinate-channel. 
     
     
         3 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft as defined  claim 1 , wherein said engine control unit will be input with the information of the air-fuel ratio and the engine load condition to compute the pressure condition in the primary-coordinate-channel and the secondary-coordinate-channel prior to their associated injection-process, thereby utilizing said pressure condition to adjust the actuation timings of the first-coordinate-valve and the second-coordinate-valve. 
     
     
         4 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft as defined in  claim 1 , wherein said variable-profile-camshaft is actuated with hydraulic mechanisms or mechanical mechanisms to shift the phase of said variable-profile-camshaft. 
     
     
         5 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft as defined in  claim 1 , wherein said variable-profile-camshaft will actuate each coordinate-valve with a relatively early initiation timing and longer open-time in the low power output condition; said variable-profile-camshaft will actuate each coordinate-valve with a relatively late initiation timing and shorter open-time in the high power output condition. 
     
     
         6 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft as defined  claim 1 , wherein said variable-coordination-timing system is employed with a movable rocker arm and a variable-profile-camshaft in the overhead-valve configuration, said movable rocket arm will shift its contacting surface on the profiles of said variable-profile-camshaft, thereby changing the open-times and the actuation timings of said first-coordinate-valve and said second-coordinate-valve. 
     
     
         7 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft as defined in  claim 1 , wherein said fuel-supplying can be a carburetor or a direct-injection or a converter; the fuel will be supplied into the primary-power-cylinder during the primary-intake-process, and the fuel will be supplied into the secondary-power-cylinder during the secondary-intake-process. 
     
     
         8 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft as defined  claim 1 , wherein said fuel-supplying means and said ignition means can be a diesel-fuel-injector or a fuel-pump, the primary-power-cylinder will be supplied with air during the primary-intake-process, and the fuel will be injected into the primary-power-cylinder between 35 degree before the TDC of the primary-piston and 40 degree after the TDC of the primary-piston to initiate the primary-hot-expansion-process; the secondary-power-cylinder will be supplied with air during the primary-intake-process, and the fuel will be injected into the secondary-power-cylinder between 35 degree before the TDC of the secondary-piston and 40 degree after the TDC of the secondary-piston to initiate the secondary-hot-expansion-process. 
     
     
         9 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft as defined  claim 1 , wherein, said three cylinders can be constructed in an asymmetrical 12-stroke-sequence to reduce the resonance vibration, and the dual-phase-difference can be between 315 degree and 405 degree. 
     
     
         10 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft as defined in  claim 1 , wherein said primary-power-cylinder and said-secondary-power-cylinder and said cooling-cylinder is constructed in the double-crankshaft configuration; said primary-power-cylinder and said secondary-power-cylinder are connected to a main-crankshaft, and said cooling-cylinder is connected to a cooling-crankshaft, and said cooling-crankshaft is coupled and synchronized with said main-crankshaft with gears or chains to rotate at the same speed. 
     
     
         11 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft comprising:
 a) a primary-power-cylinder, a secondary-power-cylinder and a cooling-cylinder operating in a 12-stroke-sequence; wherein, said primary-power-cylinder contains a reciprocating primary-piston, said secondary-power-cylinder contains a reciprocating secondary-piston, said cooling-cylinder contains a reciprocating cooling-piston; said three cylinders are constructed with a cooling-phase between 45 degree and 150 degree; said primary-power-cylinder and said cooling-cylinder together performs a primary-intake-process, a first-recharge-process, a primary-compression-process, a first-cold-compression-process, a primary-hot-expansion-process, a first-injection-process, a primary-cold-expansion-process, and a primary-exhaust-process; said secondary-power-cylinder and said cooling-cylinder together performs a secondary-intake-process, a second-recharge-process, a secondary-compression, a second-cold-compression-process, a secondary-hot-expansion-process, a second-injection-process, a secondary-cold-expansion-process, and a secondary-exhaust-process;   b) an engine control unit for determining and instructing the process durations of the first-injection-process and the second-injection-process according to the engine operation condition;   c) a variable-coordination-timing system for shifting the process durations of the first-injection-process and the second-injection-process according to instruction signals from the engine control unit; said variable-coordination-timing system includes a primary-coordinate-channel, a secondary-coordinate-channel, a first-input-valve, and a second-input-valve for distributing the compressed-air of said cooling-cylinder; the compressed-air of said cooling-cylinder is directed into said primary-coordinate-channel with said first-input-valve during the first-cold-compression-process; the compress-air of said cooling-cylinder is directed into said secondary-coordinate-channel with said second-input-valve during the second-cold-compression-process; said variable-coordination-timing system includes a first-coordinate-valve for opening an air-passage from said primary-coordinate-channel to said primary-power-cylinder to effect the first-injection-process at the timing instructed by the engine control unit; said variable-coordination-timing system includes a second-coordinate-valve for opening an air-passage from said secondary-coordinate-channel to said secondary-power-cylinder to effect the second-injection-process at the timing instructed by the engine control unit; said variable-coordination-timing system includes a variable-profile-camshaft and a profile shifter controlled by said engine control unit, said profile shifter will shift the profiles of said variable-profile-camshaft in contact with each of said first-coordinate-valve and said second-coordinate-valve, which adjusts the actuation timings of said first-coordinate-valve and said second-coordinate-valve according to the instruction signals from the engine control unit, such that the first-coordinate-valve is actuated after said primary-coordinate-channel has an air-pressure higher than the combustion pressure in said primary-power-cylinder, and the second-coordinate-valve is actuated after said secondary-coordinate-channel has an air-pressure higher than the combustion pressure in said secondary-power-cylinder.   
     
     
         12 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft as defined in  claim 11 , wherein, said variable-profile-camshaft has an open-time varying from 5 degree to 90 degree. 
     
     
         13 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft as defined in  claim 11 , wherein, said first-injection-process is initiated at a time varying from 15 degree after the TDC of said primary-piston to 10 degree before the TDC of said cooling-piston. 
     
     
         14 . A variable-coordination-timing type self-cooling engine with variable-profile-camshaft as defined in  claim 11 , wherein, said second-injection-process is initiated at time varying 15 degree after the TDC of said secondary-piston to 10 degree before the TDC of said cooling-piston.