197 results about "Down shifting" patented technology

An improved variable radius chain or belt transmission is provided for bicycle, motorcycle, automobile, industrial, household and consumer product uses. It delivers power and shifts under power through a continuously variable range of ratios. Alternative means are disclosed: for properly engaging the chain or belt regardless of drive radius; for handing off the workload of the chain or belt even while the drive's effective radius is changing; for minimizing the force required to expand a drive under chain or belt; for supporting the chain or belt attachment points in radially variable manner; for circumferentially bridging the spans between radial attachment points; for coordinating the radial movement of the attachment points within one drive; for actuating up-shifting or down-shifting processes in forward or reverse; and for simultaneously varying the effective radii of input and output drives in coordinated fashion.

An automotive automatic transmission control apparatus is provided which works to increase the power of an engine in response to a request to down-shift the gear of an automatic transmission for developing the engine braking. The control apparatus includes a fail-safe circuit working to stop increasing the power of the engine when a defect in operation of a transmission hydraulic control circuit is detected after the hydraulic control circuit starts to control the hydraulic pressures to achieve the downshift of the automatic transmission. This eliminates or alleviates a problem, such as unwanted acceleration of the vehicle during the control of the downshift in the transmission.

In performing a down-shift based on a driver's intention of deceleration, an engine output increasing control is started at a time when a transfer torque capacity of the releasing clutch becomes small or zero and the actual oil pressure decreases to an initial oil pressure, not causing an acceleration feeling even upon the engine output increase. For estimating a time when which the real pressure of the releasing clutch decreases to a level of not higher than the initial pressure, the response of the real pressure relative to an oil pressure command value for the releasing clutch is approximated using a transfer characteristic of “first order lag+time delay.” An estimated real oil pressure obtained based on the transfer characteristic is compared with the initial pressure. It is determined a start timing of the engine output increasing control has been reached upon decrease of the estimated pressure to the initial pressure.

An optical communications system includes a receiver subsystem with at least two heterodyne receivers. The receiver subsystem receives a composite optical signal having two or more subbands of information and corresponding tones. An optical splitter splits the composite optical signal into optical signals. Each optical signal includes a subband(s) and corresponding tone. Each heterodyne receiver receives an optical signal. The receiver includes a heterodyne detector coupled to a signal extractor. The heterodyne detector mixes the optical signal with an optical local oscillator to produce an electrical signal which includes a frequency down-shifted version of the subband and the tone of the optical signal. The signal extractor mixes the frequency down-shifted subband with the frequency down-shifted tone to produce a frequency component containing the information.

The invention is an automatic transmission shifting system for automobile, the automobile having a steering column assembly including a steering wheel at one end and steering column, and an electrical wire having first end terminating at the steering wheel and a second end terminating at least partially down the steering column. The system includes a first shifting actuator mounted to the steering wheel assembly, the first shifting actuator for initiating up shifts in the transmission by movement thereof and providing a first up shift signal to the first end of the wire. A second shifting actuator mounted is on the steering wheel assembly, the second shifting actuator for initiating down shifts in the transmission by movement thereof and providing down shift signals to the first end of the wire. Transmission actuation means is provided for up shifting and down shifting the transmission in response to the first up shifting and the second down shifting signals, respectively.

The embodiment of the invention provides a gear-shifting control method and device and an electric car. The gear-shifting control method comprises the steps that the car speed of the electric car is obtained; according to the opened degree of an accelerator pedal and preset gear-shifting points, whether the car speed reaches the gear-shifting car speed is determined; if the car speed reaches the gear-shifting car speed, up-shifting or down-shifting of the current gear of the electric car is conducted through a motor controlled by a motor controller and a gearbox controlled by a gearbox controller. By adoption of the technical schemes, the opened degree of an accelerator and the car speed double parameters are applied to make a gear-shifting rule, the gear-shifting car speed is determined according to the different accelerator opened degrees and the highest efficiency value of a motor-gearbox system when the gearbox works at different gears, the electric car can be made to be in a high-power work state for a long time in the traveling process, energy consumption is reduced, and the energy utilization rate is increased.

The invention relates to the technical field of hybrid electric vehicles, in particular to a gear shifting reminding method of a hybrid electric vehicle. The method comprises the steps that under the condition of meeting a gear shifting activation condition, the running parameters of the hybrid electric vehicle are obtained, and comprise the current vehicle speed, the current engine rotating speed, the current engine output torque and the current motor output torque; the current gear value is calculated according to the proportional relation between the current vehicle speed and the current engine rotating speed; upshift target vehicle speed and down-shift target vehicle speed corresponding to the current gear value are determined through the sum of the current engine output torque and the current motor output torque; if the current vehicle speed is larger than the upshift target vehicle speed, a user is reminded of upshift information; and if the current vehicle speed is smaller than the down-shift target vehicle speed, the user is reminded of down-shift information. By means of the method, optimal fuel economy gear recommendation is carried out, and a driver is helped to achieve the aim of improving the fuel economy of the hybrid electric vehicle.

A system and method for managing the power of an engine-powered vehicle is provided. The power of the engine is managed in automatic vehicle speed mode by inputting the desired vehicle ground speed and a measured variable to an electronic controller, which automatically up-shifts the transmission and reduces engine speed to maintain a desired vehicle speed and reduce fuel consumption when a load on the vehicle is reduced and down-shifts the transmission and increases engine speed when the load is applied. The measured variable is (a) the position of a selector switch, which is positionable in a field mode for operating the vehicle in a field, including tillage applications under changing load conditions, and a road mode for operating the vehicle during road hauling or transportation, (b) the position of a brake and ground speed, (c) vehicle slippage and ground speed, (d) an operator set maximum and minimum ground speed, (e) an operator set maximum and minimum gear setting, (f) system sensitivity, and / or (g) change in implement status.

The invention provides a substrate processing apparatus and a coating apparatus and a coating method characterized in that a rectangular processed substrate is kept a fitting processed posture as a simple structure for stably suspending moving on a suspension loading station. A first and a second holding parts (106L, 106R) in a first (left side) and a second (right side) moving parts (84L, 84R) comprise two adsorption pads (108L, 108R) combined at the reverse (low surface) of the two corners at left side and right side of the substrate G through a vacuum adsorption force; a pair of pad support parts (110L, 110R) for inhibiting the displacement in perpendicular direction of each adsorption pad (108L, 108R) in two positions which are separated by a prescriptive space along the moving direction (X direction); and a pair of pad actuators (112L, 112R) enabling the pad support parts (110L, 110R) to respectively independently up-down moving or up-down shifting.

The present invention provides a control device for a vehicular drive apparatus with a structure of enabling the suppression of gearshift shock occurring during concurrent shifting executed of a first shifting portion and a second shifting portion. When the concurrent shifting are executed around the same time in which a down shift in one of a differential portion (first shifting portion) and an automatic shifting portion (second shifting portion) and an upshift in the other of them are executed, a first electric motor is caused to control a rotation speed of a second rotary element (sun gear). Thus, a shifting progress state upon the concurrent shifting is controlled. This causes shifting directions i.e., variation of the engine rotation speed in shifting of a shifting mechanism to be set in a unidirectional, enabling the suppression of gearshift shock.

Safety as well as the minimum driving performance is secured by preventing abrupt down-shifting if a line pressure valve or a primary pressure control valve fails. A line pressure path connected to an oil pump is connected with a line pressure control valve. A first primary pressure path branched from the line pressure path is connected with a hydraulic fluid chamber through a fail-safe valve, and a secondary pressure path branched from the line pressure path is connected to a hydraulic fluid chamber. The line pressure control valve is connected with a second primary pressure path in communication with a hydraulic fluid chamber, and this secondary primary pressure path is provided with a primary pressure control valve and a limiter valve. When the line pressure control valve and the primary pressure control valve fail and excess line pressure or primary pressure is output, the pressure in the hydraulic fluid chamber is reduced by the fail-safe valve, so that the pressure in the hydraulic fluid chamber is reduced by the limiter valve.

An inline automatic / manual shifter is provided with a shift lever that moves in a straight line path to select one of a shift position. Manual up-shift and down-shift switches are actuated by the shift lever while in the drive position to cause an upshift or a downshift of the automatic transmission. The shift position retaining mechanism includes a detent spring engages notches in a detent plate to hold the shift lever in one of the shift positions. A drive position notch has an up-shift switch ramp surface and a down-shift switch ramp surface with a center neutral drive location located between the up-shift and down-shift switch ramp surfaces. The up-shift and down-shift switch ramp surfaces are arranged such that the detent spring applies an urging force on the drive position notch to bias the detent spring and the shift lever to the center neutral drive location.

Method and arrangement for adjusting shift characteristics of a transmission of a heavy vehicle. A heavy vehicle is operated and that is powered by an internal combustion engine equipped with an automated manual transmission and a power take off. The power take off, when operating, imposes a torque-consuming load on the engine. Operation of the power take off is detected when the engine of the vehicle is in a power mode. At least one gear-shift event is adapted to occur at a higher engine speed when power take off operation is detected than when power take off operation is not detected. The gear-shift event is affected at an engine speed that is approximately five to twenty-five percent higher than when power take off operation is not detected. The gear-shift event may be an up-shift to a lower ratio gear engagement or a down-shift to a higher ratio gear engagement.

It is possible to reduce the torque drop caused by a transmission shock and a time lag in a hybrid system. When the transmission speed ratio is up-shifted in a hybrid system control method, a motor torque is instantaneously increased upon start of a half clutch control of a clutch and the motor torque is controlled to be zero or minus to compensate a vehicle drive torque increase by the engine rotation inertia during the half clutch control. When the clutch is completely connected, the motor torque is increased.After the increase of the torque, the motor torque is decreased with a predetermined time constant. When down-shift is performed, the motor torque is increased upon start of the half clutch control and the motor torque is decreased with a predetermined time constant from the increased torque so as to compensate the lowering of the vehicle drive torque by the engine rotation inertia, thereby smoothly making a connection to a torque-up amount upon a complete clutch connection.

A rider interface for electronic or mechanical shifting of an ATV provided on the ATV handlebars. An up-shift mechanism is located on one side of the ATV and a down-shift mechanism is located remotely from the up-shift mechanism on an opposite side of the ATV. Preferably, the up-shift mechanism is in the form of a paddle lever and the down-shift mechanism is in the form of a trigger lever.

Tunable down-hole stimulation systems feature closed-loop control of pumps and tunable down-hole stimulators. Stimulators generate and hydraulically transmit broad vibration spectra tuned for resonance excitation and fracturing of geologic materials adjacent to the wellbore. Feedback data for controlling stimulation includes backscatter vibration originating in stimulated geologic material and detected at the stimulator(s). For initial fracturing with relatively large particle sizes, the power spectral density (PSD) of each stimulator output is down-shifted toward the lower resonant frequencies of large particles. As fracturing proceeds to smaller (proppant-sized) fragments having higher resonant frequencies, backscatter vibration guides progressive up-shifting of stimulator PSD to higher vibration frequencies. Stimulator power requirements are minimized by concentrating vibration energy efficiently in frequency bands to which geologic materials are most sensitive at every stage of stimulation. Geologic fragmentation efficiency is thus optimized, with inherent potential for plain-water fracs completed with self-generated proppant.

In a multiple speed-change operation for switching between an up-shift operation and a down-shift operation, engine torque control is adapted to an actual change in speed-change state, whereby an abrupt change in rotational speed of the input shaft is prevented. One embodiment relates to a speed-change operation from the second speed to the third speed, wherein the engagement-side hydraulic pressure B4 rises and the release-side hydraulic pressure B5 drops, the rotational speed NT of the input shaft changes from a second speed state toward a third speed state and the engine torque TE is reduced by a predetermined amount TCU. If a command to perform a speed-change operation from the third speed to the second speed is issued during the aforementioned speed-change operation from the second speed to the third speed, control of the hydraulic pressures is switched to the speed-change operation from the third speed to the second speed. If it is detected because of the hydraulic pressure control that the direction of the change omega in rotational speed of the input shaft has changed toward the second speed, it is determined that the speed-change operation has actually started. Then, the torque reduction operation is suspended, and the torque is gradually restored.

A shift control system and a method thereof for an automatic transmission of a vehicle are provided. A shift range assembly permits selection of a specific shift range of automatic shift mode ranges and manual shift mode ranges. The automatic shift mode ranges include a park range, a reverse range, a neutral range, a drive range, and an engine-brake range. A shift lever position sensor detects the specific shift range selected by the shift lever assembly and outputs a corresponding signal. A shift controller outputs a shift signal for down-shifting from a current shift speed to a shift speed lower by 1 shift speed, if the detected specific shift range is the engine-brake range.

In performing a down-shift based on a driver's intention of deceleration, an engine output increasing control is started at a time when a transfer torque capacity of the releasing clutch becomes small or zero and the actual oil pressure decreases to an initial oil pressure, not causing an acceleration feeling even upon the engine output increase. For estimating a time when which the real pressure of the releasing clutch decreases to a level of not higher than the initial pressure, the response of the real pressure relative to an oil pressure command value for the releasing clutch is approximated using a transfer characteristic of “first order lag+time delay.” An estimated real oil pressure obtained based on the transfer characteristic is compared with the initial pressure. It is determined a start timing of the engine output increasing control has been reached upon decrease of the estimated pressure to the initial pressure.

A slicer circuit is disclosed. The slicer circuit has the feature that a counting-circuit is employed to count the number of continuous times of signals in a same level continuous outputted from the comparator thereof, and when the number of continuous times reaches a preset value, a control signal is output to make a resistance circuit consisting of dynamic devices open, so as to largely delay the up-shift or down-shift speed of an input DC reference level and enable the slicer circuit to continue to judge the input signal correctly according to the input DC reference level.

A method and system are disclosed for segmenting a population, and include the defining of a base level population segmentation tree. A set of alternative level variables usable as substitutes in the nodes of the population segmentation tree are defined. Substitute split values for each node of the tree are determined to enable up and down shifting between levels.

A shift control system for a hybrid vehicle having an engine and a motor as power sources may include a driving condition detector which detects whether a kick-down shift-request occurs in EV (Electric Vehicle), and a hybrid control unit which changes a driving mode from the EV (Electric Vehicle) mode to HEV (Hybrid Electric Vehicle) mode by connecting an engine clutch when the kick-down shift-request may be detected and an engine may be operated, and executes a kick-down shift.

A wideband receiver system is provided to concurrently receive multiple RF channels including a number of desired channels that are located in non-contiguous portions of a radio frequency spectrum and to group the number of desired channels into a contiguous frequency band. The system includes a wideband receiver having a complex mixer for down-shifting the multiple RF channels and transforming them to an in-phase signal and a quadrature signal in the baseband. The system further includes a wideband analog-to-digital converter module that digitizes the in-phase and quadrature signals and a digital frontend module that transforms the digital in-phase and quadrature signals to baseband signals that contains only the number of desired RF channels. that are now located in a contiguous frequency band. An up-converter module up-shifts the baseband signals to a contiguous band in an IF spectrum so that the system can directly interface with commercially available demodulators.

The present invention provides single-hand operated keyboard and its input method and consists of code scanning circuit, signal transmission interface, base plate and keys. The keyboard features at most 48 keys including letter keys, switching keys and special function keys. The switching keys include one available SHIFT key, one L&SHIFT key for left shift and one DWNSHIFT key for down shift. Each key is divided into four areas including the I or default area, the II or down key area, the III or left area and the IV or down left area. The keyboard is suitable for single-handed operation and meets the requirement of development in computer.

A vehicle (10) has a frame (12), at least two wheels (14, 16), a straddle seat (28), a handlebar (18) having first (20) and second (22) handles, an engine (30), a semi-automatic transmission (32), and a housing (24) disposed adjacent the first handle. A shift lever (108) is pivotally connected to the housing. At least a portion of the shift lever extends away from the handle side of the housing towards an end of the first handle and is disposed at least in part vertically below the first handle. The shift lever has rear (140) and front surfaces (142). The shift lever is movable to an up-shift position by pressing one of the front and rear surfaces, is movable to a down-shift position by pressing a remaining one of the front and rear surfaces, and is biased towards a rest position intermediate the up-shift and down-shift positions. The shift lever is operatively connected to the semi-automatic transmission.

A control apparatus of hybrid vehicle has a drive mode change section, a deceleration detection section, an engine stall prevention control section, an engine stall prediction section, and an engine stall avoidance control section. The drive mode change section changes drive modes of EV drive mode, HEV drive mode and WSC drive mode according to a vehicle travel state. The engine stall prevention control section performs a coast-down shift which changes a transmission ratio of an automatic transmission to a lower transmission ratio upon deceleration of the vehicle. The engine stall prediction section predicts whether or not an engine stall occurs, during a travel in a HEV drive mode. The engine stall avoidance control section disengages at least one of first and second engagement elements when the occurrence of the engine stall is predicted by the engine stall prediction section.

A 3D ultraviolet (UV) imaging LADAR system includes a UV source configured to generate a UV interrogation beam, a sensor configured to receive a UV return beam reflected from a target and to produce an electrical signal, and an imaging module coupled to the sensor and configured to receive the electrical signal and to generate a corresponding 3D image of the target. In one example, the sensor includes a down-shifting device configured to down-shift the UV return beam to a down-shifted light beam of a different wavelength, for example, in the visible or SWIR wavelength ranges.