Abstract: The invention relates to a method for operating an internal combustion engine (1) provided with at least one working cylinder (3a-3d) each with an associated auxiliary cylinder (5a-5d), which engine (1) is operable in spark ignition and compression ignition modes. Each working cylinder (3a-3d) comprises a working piston (7a-7a) connected to a first crankshaft (9), and each auxiliary cylinder (5a-5d) comprises an auxiliary piston (10a-10d) connected to a second crankshaft (12). The first crankshaft (9) is connected to the second crankshaft (12) to drive the second crankshaft (12) at half the rotational speed of the first crankshaft (9). A device for controlling the phase angle is arranged between the first and second crankshafts. The method involves controlling the phase shift device in order to retain residual exhaust gas and increase the compression ratio.

Abstract: A pressure pulse generator includes a cylinder (2), a body (9) connected to the cylinder (2), a first channel (15) extending from the cylinder (2) to a pressure sink LP, a pressure fluid circuit having a second channel (4) extending to the cylinder (2) from a pressure source HP, an actuator piston (3) being displaceable arranged, a controllable first valve body (5) arranged in the second channel (4) to open or close a pressure fluid flow in the second channel (4), an electro element (7) to control the valve body (5), a second valve body (8) arranged at or to the second channel (4) for opening or closing of the channel (4). The second valve body (8) is an element rigidly connected to the actuator piston (3).

Abstract: The invention relates to a method for operating an internal combustion engine (1) provided with at least one working cylinder (3a-3d) each with an associated auxiliary cylinder (5a-5d), which engine (1) is operable in spark ignition and compression ignition modes. Each working cylinder (3a-3d) comprises a working piston (7a-7d) connected to a first crankshaft (9), and each auxiliary cylinder (5a-5d) comprises an auxiliary piston (10a-10d) connected to a second crankshaft (12). The first crankshaft (9) is connected to the second crankshaft (12) to drive the second crankshaft (12) at half the rotational speed of the first crankshaft (9). A device for controlling the phase angle is arranged between the first and second crankshafts. The method involves controlling the phase shift device in order to retain residual exhaust gas and increase the compression ratio.

Abstract: A new karaoke system intended for use in private homes. The complete system is included on a Karaoke-DVD-Disc playable in a DVD-player intended for use in private homes. The system is manoeuvred by the remote control of the DVD-player and program instructions on the DVD-disc. A microphone with a SCART-connector can be connected between the DVD-player and the TV-set. The music-video, the text of the lyrics and the songs are stored on the DVD-disc. The sound and the pictures are presented on the TV-set.