Supercharged engine having main and auxiliary combustion chambers

Claim 2

In an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch opening, a first carburetor communicating with a main intake passage, a second carburetor communicating with an auxiliary intake passage, means connecting said main intake passage to said main combustion chamber, said means including a rotary supercharger, said means also including a first bypass passage around said supercharger, a second bypass passage connecting said main intake passage and said auxiliary intake passage, and means responsive to the power output of the engine and acting, when the output is low, to open the first bypass passage and to close the second bypass passage, said means acting, when the engine output is high, to close the first bypass passage and open the second bypass passage, whereby all of the mixture from the first carburetor must pass through the supercharger and whereby a part of that mixture is delivered to both of said combustion chambers.

Claim 3

In an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch opening, a first carburetor communicating with a main intake passage, a second carburetor communicating with an auxiliary intake passage, means connecting said main intake passage to said main combustion chamber, said means including a rotary supercharger, said means also including a first bypass passage around said supercharger and provided with a first bypass valve, a second bypass passage connecting said main intake passage and said auxiliary intake passage and provided with a second bypass valve, and means responsive to the power output of the engine and acting, when the output is low, to open the first bypass valve and to close the second bypass valve, said means acting, when the engine output is high, to close the first bypass valve and open the second bypass valve, whereby all of the mixture from the first carburetor must pass through the supercharger and whereby a part of that mixture is delivered to both of said combustion chambers.

Claim 4

In an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch opening, a first carburetor communicating with a main intake passage, a second carburetor communicating with an auxiliary intake passage, means connecting said main intake passage to said main combustion chamber, said means including a rotary supercharger, said means also including a first bypass passage around said supercharger and provided with a first bypass valve, a second bypass passage connecting said main intake passage and said auxiliary intake passage and provided with a second bypass valve, and means responsive to the power output of the engine and acting, when the output is low, to open the first bypass valve and to close the second bypass valve, said means acting, when the engine output is high, to close the first bypass valve and open the second bypass valve, whereby all of the mixture from the first carburetor must pass through the supercharger and whereby a part of that mixture is delivered to both of said combustion chambers.

Claim 5

In an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch opening, a first carburetor communicating with a main intake passage, a second carburetor communicating with an auxiliary intake passage, means connecting said main intake passage to said main combustion chamber, said means including a rotary supercharger, said means also including a first bypass passage bypassing said supercharger and provided with a first bypass valve, a second bypass passage connecting said main intake passage and said auxiliary intake passage and provided with a second bypass valve, said second bypass valve in a first position closing said second bypass passage while opening said auxiliary intake passage, said second bypass valve in a second position closing said auxiliary intake passage upstream from said second bypass valve and opening said second bypass passage, a turbine operated by exhaust gases and serving to drive said supercharger, a selector operatively connected to both of said bypass valves, the selector being responsive to low power output of the engine and acting on said bypass valves to open said first bypass passage and to close said second bypass passage, said selector being responsive to high power output of the engine to act on said bypass valves to close the first bypass passage, to open the second bypass passage and to close the auxiliary passage upstream from the second bypass valve, whereby all of the mixture from the first carburetor must pass through the supercharger and whereby a part of that mixture is delivered to both of said combustion chambers.

Claim 6

In an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch opening, a first carburetor communicating with a main intake passage, a second carburetor communicating with an auxiliary intake passage, means connecting said main intake passage to said main combustion chamber, said means including a rotary supercharger, said means also including a first bypass passage bypassing said supercharger and provided with a first bypass valve, a second bypass passage connecting said main intake passage and said auxiliary intake passage and provided with a second bypass valve, said second bypass valve in a first position closing said second bypass passage while opening said auxiliary intake passage, said second bypass valve in a second position closing said auxiliary intake passage upstream from said second bypass valve and opening said second bypass passage, a turbine operated by exhaust gases and serving to drive said supercharger, a selector operatively connected to both of said bypass valves, the selector being responsive to low power output of the engine and acting on said bypass valves to open said first bypass passage and to close said second bypass passage, said selector being responsive to high power output of the engine to act on said bypass valves to close the first bypass passage, to open the second bypass passage and to close the auxiliary passage upstream from the second bypass valve, whereby all of the mixture from the first carburetor must pass through the supercharger and whereby a part of that mixture is delivered to both of said combustion chambers.

Claim 7

In an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch opening, a first carburetor having a main primary barrel and a main secondary barrel, each communicating with a main intake passage, a second carburetor having a barrel communicating with an auxiliary intake passage, a throttle valve in each of said barrels, neans connecting said main intake passage to said main combustion chamber, said means including a rotary supercharger, said means also including a first bypass passage bypassing said supercharger and provided with a first bypass valve, a second bypass passage connecting said main intake passage and said auxiliary intake passage and provided with a second bypass valve, said second bypass valve in a first position closing said second bypass passage while opening said auxiliary intake passage, said second bypass valve in a second position closing said auxiliary intake passage upstream from said second bypass valve and opening said second bypass passage, a turbine operated by exhaust gases and serving to drive said supercharger, a selector operatively connected to both of said bypass valves, the selector being responsive to low power output of the engine and acting on said bypass valves to open said first bypass passage and to close said second bypass passage, said selector being responsive to high power output of the engine to act on said bypass valves to close the first bypass passage, to open the second bypass passage and to close the auxiliary passage upstream from the second bypass valve, whereby all of the mixture from the first carburetor must pass through the supercharger and whereby a part of that mixture is delivered to both of said combustion chambers.

Claim 8

In an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch opening, a first carburetor having a main primary barrel and a main secondary barrel, each communicating with a main intake passage, a second carburetor having a barrel communicating with an auxiliary intake passage, a throttle valve in each of said barrels, neans connecting said main intake passage to said main combustion chamber, said means including a rotary supercharger, said means also including a first bypass passage bypassing said supercharger and provided with a first bypass valve, a second bypass passage connecting said main intake passage and said auxiliary intake passage and provided with a second bypass valve, said second bypass valve in a first position closing said second bypass passage while opening said auxiliary intake passage, said second bypass valve in a second position closing said auxiliary intake passage upstream from said second bypass valve and opening said second bypass passage, a turbine operated by exhaust gases and serving to drive said supercharger, a selector operatively connected to both of said bypass valves, the selector being responsive to low power output of the engine and acting on said bypass valves to open said first bypass passage and to close said second bypass passage, said selector being responsive to high power output of the engine to act on said bypass valves to close the first bypass passage, to open the second bypass passage and to close the auxiliary passage upstream from the second bypass valve, whereby all of the mixture from the first carburetor must pass through the supercharger and whereby a part of that mixture is delivered to both of said combustion chambers.

Claim 9

In an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch opening, a first carburetor having a main primary barrel and a main secondary barrel, each communicating with a main intake passage, a second carburetor having a barrel communicating with an auxiliary intake passage, a throttle valve in each of said barrels, means connecting said main intake passage to said main combustion chamber, said means including a rotary supercharger, said means also including a first bypass passage bypassing said supercharger and provided with a first bypass valve, a second bypass passage connecting said main intake passage and said auxiliary intake passage and provided with a second bypass valve, said second bypass valve in a first position closing said second bypass passage while opening said auxiliary intake passage, said second bypass valve in a second position closing said auxiliary intake passage upstream from said second bypass valve and opening said second bypass passage, a turbine operated by exhaust gases and serving to drive said supercharger, a selector operatively connected to both of said bypass valves, the selector being responsive to the position of the throttle valve in said main primary barrel of said first carburetor, said selector acting on said bypass valves to open said first bypass passage and to close said second bypass passage when the latter said throttle valve is only partially open, said selector acting on said bypass valves to close the first bypass passage, to open the second bypass passage and to close the auxiliary passage upstream from the second bypass valve when the latter said throttle valve is fully open, whereby all of the mixture from the first carburetor must pass through the supercharger and whereby a part of that mixture is delivered to both of said combustion chambers.

Claim 10

In an internal combustion piston engine having a main combustion chamber and an auxiliary combustion chamber connected by a torch opening, a first carburetor having a main primary barrel and a main secondary barrel, each communicating with a main intake passage, a second carburetor having a barrel communicating with an auxiliary intake passage, a throttle valve in each of said barrels, means connecting said main intake passage to said main combustion chamber, said means including a rotary supercharger, said means also including a first bypass passage bypassing said supercharger and provided with a first bypass valve, a second bypass passage connecting said main intake passage and said auxiliary intake passage and provided with a second bypass valve, said second bypass valve in a first position closing said second bypass passage while opening said auxiliary intake passage, said second bypass valve in a second position closing said auxiliary intake passage upstream from said second bypass valve and opening said second bypass passage, a turbine operated by exhaust gases and serving to drive said supercharger, a selector operatively connected to both of said bypass valves, the selector being responsive to the position of the throttle valve in said main primary barrel of said first carburetor, said selector acting on said bypass valves to open said first bypass passage and to close said second bypass passage when the latter said throttle valve is only partially open, said selector acting on said bypass valves to close the first bypass passage, to open the second bypass passage and to close the auxiliary passage upstream from the second bypass valve when the latter said throttle valve is fully open, whereby all of the mixture from the first carburetor must pass through the supercharger and whereby a part of that mixture is delivered to both of said combustion chambers.