1. An ion airflow generating device comprising a plurality generator stages, each generator stage comprising a plurality of generators, each generator comprising a needle-shaped emitter and a ring-shaped receiver, the receivers in the same generator stage being arranged in an array, each receiver defining a groove in an outer circumferential surface thereof along a direction parallel to the central axis thereof, each two adjacent receivers in a former generator stage connecting with each other and the grooves thereof cooperatively defining a hole for holding an emitter in a next generator stage, and the receivers in the next generator stage symmetrically offsetting from the receivers in the former generator stage such that each emitter aligns to the center of a corresponding receiver.
2. The ion airflow generating device of claim 1, wherein the emitter comprises a needle electrode.
3. The ion airflow generating device of claim 1, wherein the emitter is made of brass.
4. The ion airflow generating device of claim 1, wherein the receiver comprises a ring electrode.
5. The ion airflow generating device of claim 4, wherein the receiver is a ring-shape selected from the group consisting of a triangular ring, a rectangular ring, a discontinuous ring, a spiral, a set of concentric rings, a set of concentric discontinuous rings, and a set of concentric spirals.
6. The ion airflow generating device of claim 1, wherein the receiver is made of brass.
7. The ion airflow generating device of claim 1, further comprising a guide tube having an inlet and an outlet, the guide tube sleeving the generator stages and configured for guiding airflow generated by the generator stages from the inlet to the outlet.
8. The ion airflow generating device of claim 7, further comprising a plurality of connecting rings, the configuration of the connecting rings being substantially similar to the receivers, the connecting rings supporting the emitters in a generator stage adjacent to the inlet.
9. The ion airflow generating device of claim 8, further comprising a plurality of connecting semi-rings, the connecting semi-ring is a half of the connecting ring and configured for connecting the receivers in a generator stage of which the number of the receivers is less than that of an adjacent generator stage to the guide tube.
10. The ion airflow generating device of claim 1, further comprising a high voltage power supply configured for charging the generators, the high voltage power supply comprising a high voltage input and a low voltage input, the emitters in the next generator stage and the receivers in the former generator stage connecting to one of the high voltage input and the low voltage input, the receivers in the next generator stage and the emitters in the former generator stage connecting to another one of the high voltage input and the low voltage input, whereby the emitters and the receivers in the same stage are connected to different voltage inputs to form a voltage drop therebetween.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. An internal combustion engine control system comprising:
a crank angle detection means that outputs a crank angle signal corresponding to a crank angle of an internal combustion engine having a plurality of cylinders;
a crank angle range storage means that stores a crank angle range at a time when the internal combustion engine stops, based on the crank angle signal; and
a piston position determination means that determines the piston positions of the plurality of cylinders, based on the crank angle signal,
wherein the crank angle detection means has a function of outputting respective recognition signals from a plurality of intermediate positions each flanked with the positions corresponding to the respective top dead centers of the pistons of the plurality of cylinders and differentiates the kinds of the respective recognition signals outputted from the adjacent intermediate positions;
wherein the piston position determination means determines the stopping position of the piston at a time when the internal combustion engine stops, based on the crank angle range stored in the crank angle range storage means and the crank angle corresponding to the position of the recognition signal outputted by the crank angle detection means; and
wherein there is determined the cylinder to which a fuel is to be initially supplied when the internal combustion engine restarts, based on the stopping position of the piston determined by the piston position determination means.
2. The internal combustion engine control system according to claim 1, wherein the number of kinds of the recognition signals corresponds to the divisor, which is the maximum prime number, among the divisors of the number of cylinders of the internal combustion engine.
3. The internal combustion engine control system according to claim 1, wherein the crank angle range storage means stores, as the crank angle range at a time when the internal combustion engine stops, the range from the crank angle corresponding to the top dead center of the cylinder immediately before the recognition signal detected immediately before the internal combustion engine stops to the crank angle corresponding to the top dead center of the piston of the cylinder that is advanced from said cylinder by 2 cylinders.
4. The internal combustion engine control system according to claim 1, wherein the piston position determination means calculates a crank angle, by dividing the crank angle range stored in the crank angle range storage means into three ranges, i.e., a first range from the starting point of the stored crank angle range to the starting point of a first recognition signal that emerges firstly, a second range from the starting point of the first recognition signal to the starting point of the second recognition signal that emerges following the first recognition signal, and a third range from the starting point of the second recognition signal to the rear end of the stored crank angle range, and determines the stopping position of the piston at a time when the internal combustion engine stops, based on at least one of the first range, the second range, and the third range and the crank angle corresponding to the position of the recognition signal outputted by the crank angle detection means.