| 摘要 |
<p>In a method of operating an internal combustion engine (1) with at least one cylinder (2) and a reciprocating piston (15) in the cylinder (2), connected with a crank shaft rotating at full load of the engine at 1200 rpm or less, to reciprocate between a top dead centre (TDC) and a bottom dead centre (BDC), the cylinder (2) having air passage openings (10, 12) for intake air and exhaust gas, said openings being closed during at least a major part of a compression stroke of the piston (15) towards TDC, a liquid non-auto-igniting fuel is injected into the cylinder (2) during the compression stroke, while said air passage openings (10, 12) are closed, at crank angles at least 30° before TDC, thereby lowering the pressure in the cylinder and accordingly the compression work performed by the piston thus increasing the efficiency of the engine.</p> |
