Fuel injection timing control in electronically controlled engine

Claim 1

An apparatus for controlling a fuel injection starting timing for an electronically controlled engine, comprising: a plurality of vortex controlled air intake combustion chambers; means for injecting fuel into an intake path from a fuel injector controlled by a basic injection timing; means for calculating an intermediate timing signal as a function of rotational speed of the engine and fuel injection pulse time in the fuel injector; and means for combining the intermediate timing signal with said basic injection timing to establish the fuel injection starting timing individually for each of said combustion chambers.

Claim 2

An apparatus for controlling a fuel injection starting timing for an electronically controlled engine, comprising: a plurality of vortex controlled air intake combustion chambers; means for injecting fuel into an intake path from a fuel injector controlled by a basic injection timing; means for calculating an intermediate timing signal as a function of rotational speed of the engine and fuel injection pulse time in the fuel injector; and means for combining the intermediate timing signal with said basic injection timing to establish the fuel injection starting timing individually for each of said combustion chambers.

Claim 11

An apparatus for controlling fuel injection in an electronically controlled internal combustion engine, comprising: an internal combustion engine with a plurality of vortex controlled combustion chambers; individually controlled ignition plugs and fuel injectors for each of said combustion chambers; injection timing means for controlling said fuel injectors with a basic timing signal, said basic timing signal solely dependent on the output of a crank angle sensing means, and said basic timing signal being positive only within the last half of an intake stroke for the combustion chamber associated with the controlled fuel injector; timing modifying means for establishing a modifying signal as a function of engine speed and a determined fuel injection pulse width; and means for modifying the control of said injection timing means in response to the established modifying signal; wherein said fuel injectors are individually controlled to begin injecting fuel to their respective combustion chambers in accordance with the modifying and basic timing signals for a duration established by said fuel injection pulse width; and wherein said vortex control causes a relatively rich fuel mixture to be injected near the ignition plug located within each of said combustion chambers.

Claim 12

An apparatus for controlling fuel injection in an electronically controlled internal combustion engine, comprising: an internal combustion engine with a plurality of vortex controlled combustion chambers; individually controlled ignition plugs and fuel injectors for each of said combustion chambers; injection timing means for controlling said fuel injectors with a basic timing signal, said basic timing signal solely dependent on the output of a crank angle sensing means, and said basic timing signal being positive only within the last half of an intake stroke for the combustion chamber associated with the controlled fuel injector; timing modifying means for establishing a modifying signal as a function of engine speed and a determined fuel injection pulse width; and means for modifying the control of said injection timing means in response to the established modifying signal; wherein said fuel injectors are individually controlled to begin injecting fuel to their respective combustion chambers in accordance with the modifying and basic timing signals for a duration established by said fuel injection pulse width; and wherein said vortex control causes a relatively rich fuel mixture to be injected near the ignition plug located within each of said combustion chambers.

Claim 13

A method of controlling fuel injection in an electronically controlled internal combustion engine, comprising the steps of: providing an engine with a plurality of vortex controlled combustion chambers; providing an ignition plug and respective individual control means therefore for each of said combustion chambers; controlling each of said plugs with a basic injection timing which establishes injection during the last half of the intake stroke for the combustion chamber associated with each controlled plug, said basic injection timing determined solely from crank angle; calculating on intermediate injection timing signal as a function of engine speed N and fuel injection timing τi; determining a fuel injection starting timing θ for each of said ignition plugs by subtracting the calculated intermediate injection timing signal from the basic injection timing; and injecting fuel into each combustion chamber and controlling its respective ignition plug for a fuel injection time τi beginning with the determined fuel injection starting timing θ; wherein said injected fuel is relatively rich within said combustion chambers at an area nearest its respective ignition plug.

Claim 14

A method of controlling fuel injection in an electronically controlled internal combustion engine, comprising the steps of: providing an engine with a plurality of vortex controlled combustion chambers; providing an ignition plug and respective individual control means therefore for each of said combustion chambers; controlling each of said plugs with a basic injection timing which establishes injection during the last half of the intake stroke for the combustion chamber associated with each controlled plug, said basic injection timing determined solely from crank angle; calculating on intermediate injection timing signal as a function of engine speed N and fuel injection timing τi; determining a fuel injection starting timing θ for each of said ignition plugs by subtracting the calculated intermediate injection timing signal from the basic injection timing; and injecting fuel into each combustion chamber and controlling its respective ignition plug for a fuel injection time τi beginning with the determined fuel injection starting timing θ; wherein said injected fuel is relatively rich within said combustion chambers at an area nearest its respective ignition plug.