| US 7,536,983 B2 | ||
| Internal combustion engine and method for operating an internal combustion engine | ||
| Wolfgang Layher, Waiblingen (Germany); Georg Maier, Stetten (Germany); Martin Rieber, Stuttgart (Germany); Tobias Flämig-Vetter, Esslingen (Germany); Jens Reimer, Stuttgart (Germany); Andreas Krups, Stuttgart (Germany); Dieter Bächle, Weil im Schönbuch (Germany); and Helmut Visel, Neustetten (Germany) | ||
| Assigned to Andreas Stihl AG & Co. KG, Waiblingen (Germany) | ||
| Filed on Jan. 17, 2007, as Appl. No. 11/623,763. | ||
| Claims priority of application No. 10 2006 002 486 (DE), filed on Jan. 19, 2006. | ||
| Prior Publication US 2007/0163557 A1, Jul. 19, 2007 | ||
| Int. Cl. F02B 25/00 (2006.01) | ||
| U.S. Cl. 123—73B [123/73 PP; 73/114.16; 73/114.33; 73/114.34; 701/103] | 35 Claims |
| 1. A method for operating an internal combustion engine that is a single cylinder two-stroke engine that comprises a cylinder
with a combustion chamber, which combustion chamber is delimited by a reciprocating piston that drives a crankshaft rotatably
supported in a crankcase, wherein the internal combustion engine further comprises an intake passage, an exhaust connected
to the combustion chamber, a device supplying fuel, and a control device controlling at least one operating parameter of the
internal combustion engine; the method comprising the steps of:
a) measuring a pressure in operation of the internal combustion engine;
b) determining an adjustable value for at least one operating parameter of the internal combustion engine based on the measured
pressure of the step a);
c) setting the determined adjustable value of step b);
wherein in the step a) the pressure in the crankcase is measured at a first predetermined crankshaft angle during a compression
phase and is measured at a second predetermined crankshaft angle during an expansion phase; and
wherein the crankcase is closed off at the first and second predetermined crankshaft angles.
|