초록 ▼

A novel and improved engine and method are provided which includes a premixed charge compression ignition engine capable of operating over a wide load range without the need to vary the IMT beyond easily achievable or desirable temperature levels. The engine and method adjust the start of combustion

A novel and improved engine and method are provided which includes a premixed charge compression ignition engine capable of operating over a wide load range without the need to vary the IMT beyond easily achievable or desirable temperature levels. The engine and method adjust the start of combustion by adjusting the engine speed and torque while delivering a targeted engine horsepower output.

대표청구항 ▼

A novel and improved engine and method are provided which includes a premixed charge compression ignition engine capable of operating over a wide load range without the need to vary the IMT beyond easily achievable or desirable temperature levels. The engine and method adjust the start of combustion

A novel and improved engine and method are provided which includes a premixed charge compression ignition engine capable of operating over a wide load range without the need to vary the IMT beyond easily achievable or desirable temperature levels. The engine and method adjust the start of combustion by adjusting the engine speed and torque while delivering a targeted engine horsepower output. during which the needle is outside of the pivot range of the thread catcher (30). 2. The thread cutter in accordance with claim 1, characterized in that the cam follower (58) is arranged directly on the thread catcher lever (26), and/or the surface cam (60) axially directly next to the hook (12). 3. The thread cutter in accordance with claim 1, characterized in that the arresting means have a movable detent element (38), which in the blocking position maintains the thread catcher lever (26), which is pre-biased by a spring (28) in the direction of pivoting in, in a radial outer position in which the surface cam (60) and the cam follower (58) are out of engagement. 4. The thread cutter in accordance with claim 3, characterized in that the detent element (38) is releasable against the force of a restoring spring (40) with the aid of an electromagnet (44), so that the cam follower (58) of the thread catcher lever comes to rest against the surface cam 60) because of the force of the spring (28). 5. The thread cutter in accordance with claim 3, characterized in that a control cam (62) of the surface cam (60) has a cam section (70), which has the greatest radius of the control cam (62) and with the aid of which the thread catcher lever (26) can be conveyed into the blocking position in which it is locked together with the detent element (38). 6. The thread cutter in accordance with claim 1, characterized in that the arresting means have an additional bolt (46) which arrests the thread catcher lever (26) in the radially outward position during the revolution of the hook shaft (16), during which the needle moves downward into the engagement range of the thread catcher lever (30). 7. The thread cutter in accordance with claim 6, characterized in that the additional bolt (46) is coupled with a cam follower (48), which acts together with a cam (54, 56) which essentially extends over 180 degree on the main shaft (18) in the base of the sewing machine. 8. The thread cutter in accordance with claim 7, characterized in that the cam (54, 56) provided on the main shaft (18) is designed as an axial cam, and the cam follower (48) is coupled with a toothed rack (46, 50) as the additional bolt, which is in contact with teeth (52) around the pivot shaft of a thread catcher lever (26). 9. The thread cutter in accordance with claim 1, characterized in that a catch (72) is arranged on a hook shaft (16), which takes the thread catcher lever (26) along in an interlocked manner over at least a partial distance during the pivoting-in movement when the latter is disengaged. 10. The thread cutter in accordance with claim 9, characterized in that at least one toothed cam (72) is provided on the hook shaft, which acts together with teeth on the thread catcher lever (26). 11. The thread cutter in accordance with one of the preceding claims, characterized in that the control cam (62) of the surface cam (60) has a holding area (68) which, prior to the cutting of the thread, moves the thread catcher (30) into a position in which the lateral entry opening (74) of a thread eye (36) for receiving the thread is covered by a stationary element, for example the cutter (82). 12. The thread cutter in accordance with claim 5, characterized in that the control cam (62) of the surface cam (60) has a holding area (68) which, prior to the cutting of the thread, moves the thread catcher (30) into a position in which the lateral entry opening (74) of a thread eye (36) for receiving the thread is covered by a stationary element, for example the cutter (82). 13. The thread cutter in accordance with claim 12, characterized in that the thread eye (36), designed as an elongated hole, is divided by a strip (76) forming the holding edge, which has a longitudinal slit (78) for receiving the thread on its side facing the cutter (82). 14. The thread cutter in accordance with claim 1, characterized in that the thread tension can be set to zero prior to severing the thread. 15. The thread