摘要:
Fuel is activated prior to combustion in an engine by an electrical arc established across an annular gap between two electrodes, and sustained for a significant portion of the injection cycle. The vaporized or gaseous fuel is directed through a spiral recess to be caused to flow vortically and cause the arc to migrate about the annular gap to reduce electrode erosion and increase exposure of the fuel to the activating effects of the arc. The arc is formed by separating contacting electrodes which applying a current to the electrodes. One of the electrodes is movable under the influence of the pressurized fuel to cause separation from the other fixed electrode, so that the arc is established as fuel begins flowing. The electrodes have opposing rimmed cavities, with fuel flow shifting the arc radially inwardly, migrating to extend between the inner wall of each cavities, and around which the arc rotates under the influence of the vortical fuel flow.
摘要:
A regenerative braking device for an automotive vehicle includes an energy storage assembly (12) having a plurality of rubber rollers (26, 28) mounted for rotation between an input shaft (30) and an output shaft (32), clutches (50, 56) and brakes (52, 58) associated with each shaft, and a continuously variable transmission (22) connectable to a vehicle drivetrain and to the input and output shafts by the respective clutches. In a second embodiment the clutches and brakes are dispensed with and the variable ratio transmission is connected directly across the input and output shafts. In both embodiments the rubber rollers are torsionally stressed to accumulate energy from the vehicle when the input shaft rotates faster or relative to the output shaft and are torsionally relaxed to deliver energy to the vehicle when the output shaft rotates faster or relative to the input shaft.
摘要:
Disclosed are several embodiments of a regenerative braking device for an automotive vehicle. The device includes a plurality of rubber rollers (24, 26) mounted for rotation between an input shaft (14) connectable to the vehicle drivetrain and an output shaft (16) which is drivingly connected to the input shaft by a variable ratio transmission (20). When the transmission ratio is such that the input shaft rotates faster than the output shaft, the rubber rollers are torsionally stressed to accumulate energy, thereby slowing the vehicle. When the transmission ratio is such that the output shaft rotates faster than the input shaft, the rubber rollers are torsionally relaxed to deliver accumulated energy, thereby accelerating or driving the vehicle.
摘要:
A lamination structure for an electromagnetic device such as a linear machine having a coaxially aligned field assembly and armature assembly. In one embodiment, the field assembly reciprocates relative to the armature assembly to actuate the valve. One configuration has a field assembly with a number of axially oriented annular permanent magnets separated by a ferromagnetic material comprised of a stack of relatively thin ferromagnetic discs which are oriented such that the geometric planes of the discs are generally perpendicular to the working magnetic field and mounted on a non-magnetic shaft. The discs are sized to optimize the conduction of the working magnetic flux while minimizing eddy currents. The housing for the device is comprised of a plurality of tubular laminations. The preferred construction provides a reluctance force which helps maintain the valve in an open or closed state without any current applied to the device.
摘要:
A semiconductor processing technique is disclosed for forming a multi-layered semiconductor structure in a single chamber and with the same equipment, without removing the semiconductor wafer substrate or otherwise transferring it to another chamber. A gaseous mixture of different gases is provided in a chamber. Excimer pulsed ultraviolet laser radiation is introduced into the chamber at a first discrete wavelength to photolytically react with a first of the gases at a discrete excitation energy photochemically breaking bonds of the first gas to epitaxially deposit a first layer on the substrate, followed by radiation at a second discrete wavelength to photolytically react with a second gas to deposit a second layer on the first layer, and so on. The different gases may be introduced into the chamber collectively, or serially between radiations. Scavenging between layers is provided by photolytic removal of surface containments and the products of reaction.
摘要:
A semiconductor ion implantation processing technique is disclosed for implanting high purity, high flux density ions in a semiconductor wafer substrate. A reactant gas is irradiated with excimer pulsed ultraviolet laser radiation at a discrete designated pulsed wavelength corresponding to a discrete designated ionization excitation energy of the gas photochemically breaking bonds of the gas to nonthermally photolytically ionize the gas. The ions are then accelerated by an electric field for subsequent implantation into a surface.
摘要:
A semiconductor processing technique is disclosed for periodically selectively effecting lattice ordering and dopant distribution during a semiconductor layer formation process. Excimer pulsed ultraviolet laser radiation is provided at different energy fluxes to provide an electrically active layer as formed, without post-annealing, and curing lattice damage otherwise due to certain processing methods such as ion implantation. In a photolytic deposition technique, excimer laser radiation is periodically increased to transiently provide a pyrolytic thermal reaction in the layer as thus far deposited to provide a plurality of short intermittent periodic annealing steps to ensure crystallization as the layer continues to be deposited at lower radiation energy fluxes. Single crystalline material may be formed without post-annealing by periodically irradiating incremental thicknesses of the layer as formed.
摘要:
A fast acting mechanical valve (2) affords macroeffects with high speed, low mass, micromovement. A first microporous planar sheet-like electrically conductive film (4) has an electrically insulative face surface (6), and an array of microapertures (7-11) through the film and face surface. A second microporous planar sheet-like electrically conductive film (12) abuts the insulative face surface and has an array of microapertures (13-16) therethrough nonaligned with the first array. An electric circuit (26, 28 and 30) supplies electric current flow through the parallel films to effect relative transverse movement therebetween due to interacting electromagnetic fields, for actuating the valve between closed and open positions.
摘要:
An energy storage device (10) is disclosed consisting of a stretched elongated elastomeric member (16) disposed within a tubular housing (14), which elastomeric member (16) is adapted to be torsionally stressed to store energy.The elastomeric member (16) is configured in the relaxed state with a uniform diameter body section (74), and transition end sections (76, 78), attached to rigid end piece assemblies (22, 24) of a lesser diameter. The profile and deflection characteristic of the transition sections (76, 78) are such that upon stretching of the elastomeric member (16), a substantially uniform diameter assembly results, to minimize the required volume of the surrounding housing (14).Each of the transition sections (76, 78) are received within and bonded to a woven wire mesh sleeve (26, 28) having helical windings at a particular helix angle to control the deflection of the transition section. Each sleeve (26, 28) also contracts with the contraction of the associated transition section to maintain the bond therebetween. During manufacture, the sleeves (26, 28) are forced against a forming surface and bonded to the associated transition section (76, 78) to provide the correct profile and helix angle.
摘要:
A system for actuating an engine valve includes a linear machine having a coaxially aligned field assembly and armature assembly. In one embodiment, the field assembly reciprocates relative to the armature assembly to actuate the valve. One configuration has a field assembly with a number of axially oriented annular permanent magnets separated by a ferromagnetic material and mounted on a non-magnetic shaft. The ferromagnetic material is preferably a compressed powdered metal which is microencapsulated with insulating material to reduce the formation of eddy currents. The preferred construction provides a reluctance force which helps maintain the valve in an open or closed state without any current applied to the armature. The system may also include an inductor and/or a capacitor tuned to the natural frequency chosen to provide regenerative actuation at a predetermined natural frequency.