Directional auxiliary intake injection for internal combustion engine
First Claim
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1. An internal combustion engine, comprising:
- a spark plug gap within a combustion chamber;
an auxiliary injection port having a directional outlet adjacent the spark plug gap for injecting a charge of a gas such as air, lean fuel mixture, or exhaust gas;
a main intake passage for supplying fuel mixture to the combustion chamber via a main intake valve;
a throttle valve disposed in the main intake passage for controlling the fuel mixture flow rate;
an auxiliary intake passage communicating with the injection port and disposed independently of the main intake passage;
a valve disposed within the auxiliary intake passage; and
means for controlling said valve in response to the movements of the throttle valve such that said valve is opened to a maximum degree when the throttle valve is opened to an intermediate position, to thereby enhance the swirling effect within the combustion chamber and improve the combustibility of the mixture within the chamber over a wide range of engine running conditions, including idling and light load operation.
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Abstract
An auxiliary charge of air, fuel mixture, and/or recycled exhaust gas is injected into the combustion chambers of an engine through directional ports adjacent the spark plug gaps to enhance combustion, reduce noxious emissions, scavenge exhaust gases, etc. The injection timing is controlled by cam driven valves, and the magnitude thereof is regulated in accordance with both engine temperature and throttle valve opening or engine load, the latter being sensed by vacuum passages adjacent the throttle in the carburetor throat or by a direct coupling to the throttle valve.
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Citations
12 Claims
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1. An internal combustion engine, comprising:
- a spark plug gap within a combustion chamber;
an auxiliary injection port having a directional outlet adjacent the spark plug gap for injecting a charge of a gas such as air, lean fuel mixture, or exhaust gas;
a main intake passage for supplying fuel mixture to the combustion chamber via a main intake valve;
a throttle valve disposed in the main intake passage for controlling the fuel mixture flow rate;
an auxiliary intake passage communicating with the injection port and disposed independently of the main intake passage;
a valve disposed within the auxiliary intake passage; and
means for controlling said valve in response to the movements of the throttle valve such that said valve is opened to a maximum degree when the throttle valve is opened to an intermediate position, to thereby enhance the swirling effect within the combustion chamber and improve the combustibility of the mixture within the chamber over a wide range of engine running conditions, including idling and light load operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a spark plug gap within a combustion chamber;
Specification