The New Combustion Engine

Consider a combustion engine. The air inlet valve opens, the piston starts to go down, and the suction stage begins. As the volume of the cylinder increases, it is filled with air. After the end of the intake stage, the intake valve is closed, and with the command of the ECU, the piston rises to compress the air. After reaching TDC, ignition is carried out, and the pressure from combustion pushes the piston down. This is the stage of combustion and power generation.

But here, there is a fundamental difference: this stage continues until the pressure inside the cylinder is no longer able to push the piston down, and the maximum power is produced. This is the opposite of conventional Otto or Miller cycle engines.

The piston stops when the ECU issues the command to open the exhaust valve. In this engine, expansion may continue up to three times the length of the piston stroke.

For this reason, combustion in this engine takes place completely, and after opening the outlet valve, all the fuel drops are combusted, and the only output is carbon dioxide.