System for selective homogeneous charge compression ignition

An internal combustion engine, comprising:

• a combustion chamber including a piston and a cylinder;
• and
• a fuel injection controller that selectively operates the engine in first and second modes of operation, and selects the mode according to engine conditions;
• wherein in the first mode, fuel is injected into compressed fluid to create a substantially heterogeneous mixture of fuel and compressed fluid, and fuel is ignited by the heat of the compressed fluid;
• and
• wherein in the second mode, fuel is injected into gas to create a substantially homogeneous mixture of gas and fuel, the substantially homogeneous mixture is compressed, and fuel is ignited by the heat of the compressed gas.

A work machine having an internal combustion engine, comprising:

• a combustion chamber including a piston and a cylinder;
• and
• a fuel injection controller that selectively operates the engine in first and second modes of operation, and selects the mode according to engine conditions;
• wherein in the first mode, fuel is injected into compressed fluid to create a substantially heterogeneous mixture of fuel and compressed fluid, and fuel is ignited by the heat of the compressed fluid;
• and
• wherein in the second mode, fuel is injected into gas to create a substantially homogeneous mixture of gas and fuel, the substantially homogeneous mixture is compressed, and fuel is ignited by the heat of the compressed gas.