Control system for an internal combustion engine with associated decompression device

A control system for an engine with an associated decompression device, comprising:

• engine speed sensor means for detecting a speed of rotation of the engine;
• fuel injection control means for controlling the injection of a fuel in the engine;
• means for operating said decompression device in response to the speed of rotation of the engine;
• said fuel injection control means being operable to initiate and stop the injection of the fuel in response to a sensed signal from said engine speed sensor means;
• and
• said engine is an onboard generator drive engine operatively associated with an onboard generator/electric motor for driving same.

A control system for an internal combustion engine, comprising:

• intake airflow control valve means for controlling an airtake airflow control valve means for controlling an intake airflow control valve to allow air to flow into the internal combustion engine, fuel injection control means for controlling injection of a fuel in the internal combustion engine, engine speed sensor means for detecting the speed of rotation of the internal combustion engine, decompression means for reducing pressure within a cylinder of the internal combustion engine, starter means for initiating rotation of the internal combustion engine:
• crank signal sensor means for detecting whether a crank signal is sent to the internal combustion engine;
• said intake airflow control valve being moved to an open condition by said intake airflow control means in response to the crank signal as sensed by crank signal sensor means;
• said starter means initiates rotation of the internal combustion engine in response to the crank signal;
• operation of said decompression means being stopped when the speed of rotation of the internal combustion engine reaches a predetermined cranking speed;
• and
• said fuel injection control means initiates the injection of the fuel when the speed of rotation of the internal combustion engine exceeds the predetermined cranking speed.

A method of controlling an internal combustion engine having intake airflow control valve means for controlling an air intake control valve to allow air to flow into the internal combustion engine, fuel injection control means for controlling the injection of fuel in the internal combustion engine, engine speed sensor means for detecting the speed of rotation of the internal combustion engine, decompression means for reducing pressure within a cylinder of the internal combustion engine, and starter means for initiating rotation of the internal combustion engine, said method comprising the steps of:

• detecting whether a crank signal is sent to the internal combustion engine;
• controlling said intake airflow control valve control means to move said intake airflow control valve to an open condition in response to a crank signal as sensed by said crank signal sensor means;
• initiating rotation of the internal combustion engine through said starter means in response to the crank signal;
• stopping operation of said decompression means when the speed of rotation of the internal combustion engine reaches a predetermined cranking speed;
• and
• initiating an injection of the fuel through said fuel injection control means when the speed of rotation of the internal combustion engine exceeds the predetermined cranking speed.