Operating internal combustion engines

摘要

A control system is disclosed for operating an internal combustion engine. The control system includes a control unit configured for providing a part load mode that is optimized for slow operation of the engine at loads up to an upper part load limit in the range from 40% to 75% of a maximum engine load. The control unit is also configured for providing a high load mode for engine loads above the upper part load limit. In the part load mode, at least one inlet valve is closed at a closing angle later than in the high load mode.

主权项

1. A control system for operating an internal combustion engine comprising at least one cylinder unit with at least one inlet valve, the control system comprising:
a control unit configured to
provide a part load mode optimized for part load operation and configured for an engine load up to an upper part load limit, which is set in the range from 40% to 75% of a maximum engine load, wherein the at least one inlet valve is closed at an inlet valve part load closing angle (αp); andprovide a high load mode configured for an engine load above the upper part load limit, wherein the at least one inlet valve is closed at an inlet valve high load closing angle (αh);wherein the inlet valve high load closing angle (αh) is in a range from 5° to 25° earlier than the inlet valve part load closing angle (αp).