Clean combustion engine system

Claim 2

A clean combustion engine system comprising: a two-cycle internal combustion engine including a cylinder, a piston movable in said cylinder, and intake and exhaust ports opening through the cylinder wall in positions such that said piston initially uncovers said exhaust port and thereafter said intake port near the conclusion of each power stroke of the piston, means including an air conduit for supplying air under pressure to said intake port, means including a fuel conduit for supplying fuel-air mixture to said intake port, timing valve means in said fuel conduit operatively connected to said piston for regulating fuel flow to said intake port in timed relation to the reciprocating motion of said piston, such that said cylinder receives an initial charge of pure air for purging said cylinder and thereafter a fuel-air mixture for combustion in said cylinder during each opening of said intake port; and said valve means comprising a rotary valve sleeve driven in rotation in timed relation to the reciprocating motion of said piston, a second rotatably adjustable valve sleeve about said first valve sleeve, a body about said second sleeve, ports in said sleeves and body which register during each revolution of said first sleeve to pass fuel to said engine, said second sleeve and body ports being circumferentially elongated relative to the first sleeve port, and means for rotatably adjusting said second valve sleeve to adjust the effective circumferential length of its port registering with the body port.

Claim 3

A clean combustion engine system comprising: a two-cycle internal combustion engine including a cylinder, a piston movable in said cylinder, and intake and exhaust ports opening through the cylinder wall in positions such that said piston initially uncovers said exhaust port and thereafter said intake port near the conclusion of each power stroke of the piston, means for supplying air under pressure to said intake port including an air compressor driven by said engine and having an outlet, and an air conduit communicating said outlet and intake port and defining a plenum chamber for containing a charge of air substantially exceeding the volume of air consumed in said cylinder during each combustion stroke of said piston, a fuel conduit communicating said outlet and intake port in parallel relation with said air conduit, a carburetor, throttle valve, and timing valve in said fuel conduit, an air valve in said air conduit for regulating air flow to said engine, a governor driven by said engine at a speed related to the engine speed, means connecting said governor, throttle valve, timing valve, and air valve for periodically supplying a regulated fuel charge to said intake port in timed relation to the reciprocating motion of said piston in a manner such that said cylinder receives an initial charge of pure air for purging the cylinder and thereafter a fuel-air mixture for combustion in said cylinder during each opening of said intake port, and positioning said air valve in response to both engine speed and throttle valve setting in a manner such that opening said throttle valve to a given setting to increase fuel flow to said engine effects opening of said air valve by said governoR in response to increasing engine speed and engine power requirements, and closing of said throttle valve to a given setting to reduce fuel flow to said engine effects closing of said air valve in response to decreasing engine speed, in accordance with power or speed control requirements.

Claim 4

A clean combustion engine system comprising: a two-cycle internal combustion engine including a cylinder, a piston movable in said cylinder, and intake and exhaust ports opening through the cylinder wall in positions such that said piston initially uncovers said exhaust port and thereafter said intake port near the conclusion of each power stroke of the piston, means for supplying air under pressure to said intake port including an air compressor driven by said engine and having an outlet, and an air conduit communicating said outlet and intake port and defining a plenum chamber for containing a charge of air substantially exceeding the volume of air consumed in said cylinder during each combustion stroke of said piston, a fuel conduit communicating said outlet and intake port in parallel relation with said air conduit, a carburetor, throttle valve, and timing valve in said fuel conduit, an air valve in said air conduit for regulating air flow to said engine, a governor driven by said engine at a speed related to the engine speed, means connecting said governor, throttle valve, timing valve, and air valve for periodically supplying a regulated fuel charge to said intake port in timed relation to the reciprocating motion of said piston in a manner such that said cylinder receives an initial charge of pure air for purging the cylinder and thereafter a fuel-air mixture for combustion in said cylinder during each opening of said intake port, and positioning said air valve in response to both engine speed and throttle valve setting in a manner such that opening said throttle valve to a given setting to increase fuel flow to said engine effects opening of said air valve by said governoR in response to increasing engine speed and engine power requirements, and closing of said throttle valve to a given setting to reduce fuel flow to said engine effects closing of said air valve in response to decreasing engine speed, in accordance with power or speed control requirements.

Claim 5

An engine system according to claim 1 wherein: the volume of said plenum chamber substantially exceeds the volume of air admitted to said cylinder during each stroke of said piston.

Claim 6

An engine system according to claim 1 wherein: said timing valve includes a rotary valve speed driven in rotation in timed relation to engine speed, a second rotatably adjustable valve sleeve about said first valve sleeve, a body about said second sleeve, ports in said sleeves and body which register during each revolution of said first sleeve to pass fuel to said engine, said second sleeve and body ports being circumferentially elongated relative to the first sleeve port, and means for rotatably adjusting said second valve sleeve to adjust the effective circumferential length of its port registering with the body port.

Claim 7

An engine system according to claim 4 including: means operatively connecting said second valve sleeve and governor for adjustment of said second sleeve to increase fuel flow to said engine in response to increasing engine speed.

Claim 8

An engine system according to claim 1 wherein: said intake port has two openings arranged side by side circumferentially of said cylinder, said fuel conduit opens to said air conduit just before said intake port and at the same side of said air conduit as one of said port openings, said piston includes a deflector for deflecting toward the cylinder head the air and fuel entering through said port openings, and said engine includes a spark plug mounted in said head directly over said one port opening.