30results about How to "Improved torque response" patented technology

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, torque demand of a driveline after a shift is forecast to determine if it is desirable to start the engine early so that engine torque is available after the shift. The approach may improve vehicle torque response.

An agent delivery catheter that includes an anti-whipping feature, improved assembly of distal parts and/or accuracy/repeatability of needle delivery to a target tissue. Additional features include fitting a catheter with a pneumatic delivery device for delivery of a therapeutic agent without using a needle.

Systems and methods for starting an engine of a hybrid vehicle are disclosed. The systems and methods disclosed may apply to series or parallel hybrid driveline configurations. In one example, engine cranking torque may be adjusted in response to a variety of operating conditions so that the engine may be started faster or slower.

An improved guiding member for use within a body lumen having a unique combination of superelastic characteristics. The superelastic alloy material has a composition consisting of about 30% to about 52% (atomic) titanium, and about 38% to 52% nickel and may have one or more elements selected from the group consisting of iron, cobalt, platinum, palladium, vanadium, copper, zirconium, hafnium and niobium. The alloy material is subjected to thermomechanical processing which includes a final cold working of about 10 to about 75% and then a heat treatment at a temperature between about 450° and about 600° C. and preferably about 475° to about 550° C. Before the heat treatment the cold worked alloy material is preferably subjected to mechanical straightening. The alloy material is preferably subjected to stresses equal to about 5 to about 50% of the room temperature ultimate yield stress of the material during the thermal treatment. The guiding member using such improved material exhibits a stress-induced austenite-to-martensite phase transformation at an exceptionally high constant yield strength of over 90 ksi for solid members and over 70 ksi for tubular members with a broad recoverable strain of at least about 4% during the phase transformation. An essentially whip free product is obtained.

The invention discloses a system and a method for improving the operation of a hybrid vehicle. In one embodiment, the torque demand of a power train after gear shift is predicted for determining whether an early start of the engine is desired, so that the engine torque can be obtained after gear shift. The method can improve the vehicle torque response.

Disclosed is an internal combustion engine controller, which is used with a fuel-based torque-on-demand control type, multi-cylinder, direct-injection internal combustion engine to provide an air flow rate control means that excels in response and convergence. This internal combustion engine controller comprises means for computing a target throttle opening from operating conditions. The means for computing a target throttle opening includes: a first computing means for determining a target throttle opening by exercising feedback control in accordance with operating conditions including an intake air flow rate; a second computing means for determining a target throttle opening by exercising feed-forward control in accordance with operating conditions; and a third computing means for determining a target throttle opening in accordance with a target throttle opening value determined by the first computing means and a target throttle opening value determined by the second computing means.

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is accelerated to a speed of a driveline integrated starter/generator before the engine is coupled to the driveline integrated starter/generator.

The invention relates to a traction converter of a straddle type monorail train. The traction converter comprises a main circuit module and a control circuit, wherein the main circuit module is provided with a pre-charge circuit, an overvoltage protection circuit, an input filtering circuit and a traction inverter circuit module; the control circuit comprises a traction controller TCU (tape control unit), a current sensor and a voltage sensor; the traction controller TCU is respectively connected with the current sensor and the voltage sensor and used for collecting voltage, current and rotary speed signal to control the output of the traction inverter circuit and finish the voltage protection. Modularized design is adopted in the main circuit of the traction converter of the straddle type monorail train, so that the volume is small, and the weight is light, wherein an IGBT (insulated gate bipolar translator) power semiconductor technology is selected in the traction inverter circuit module, the high switching frequency control is allowed, and a composite laminated bus bar with stray inductance is adopted, so that the voltage overshoot produced by the stray inductance of the circuit under the higher di/dt action can be reduced while IGBT is cut off, the probability for damaging the IGBT is reduced, and the reliability of the system is high.

Methods and systems are provided for operating a split exhaust engine system that provides blowthrough air and exhaust gas recirculation to an intake passage via a first exhaust manifold and exhaust gas to an exhaust passage via a second exhaust manifold. In one example, one or more valves of a set of first exhaust valves coupled to the second exhaust manifold may be deactivated in response to select engine operating conditions, while maintaining active all valves of a set of second exhaust valves coupled to the first exhaust manifold. The select engine operating conditions may include one or more of a deceleration fuel shut-off condition, a part throttle condition, and a cold start condition.

Systems and methods for improving operation of a hybrid vehicle are presented. In one example, an engine is started and idled before engine torque is required so that driveline torque response may be improved.

Systems and methods for operating a transmission of a hybrid powertrain that includes a motor/generator are described. The systems and methods may improve engine starting during engine starts where little or larger driver demand torques are requested. In one example, engine torque may be commanded to a torque based on a filtered driver demand torque, the filtered driver demand torque filtered based on a position of an accelerator pedal.

An object of the vehicle body vibration-damping control device according to the present invention is to achieve a targeted effect for damping the vehicle body vibration regardless of the responsiveness of an actuator for controlling the drive torque.

The vehicle body vibration-damping control device has a body vibration estimating unit (205) for estimating a sprung mass behavior of a vehicle body based on input information during travel, and a torque command-value computing unit (206) for computing a correction torque value for correcting a drive torque command value applied to an engine (106) when the sprung mass behavior is controlled. The torque command-value computing unit (206) has regulator and tuning units (308, 309, 310) for calculating the correction torque value based on the result of estimating the sprung mass behavior, and a nonlinear gain amplifying unit (313) for amplifying the absolute value of the correction torque when in a region where the positive or negative attribute of the calculated correction torque value is reversed, and using the amplified value to correct the drive torque command value.

The invention discloses an elevator door motor control device capable of automatically identifying door quality. The device comprises a door motor controller, a motor, a transmission mechanism and a door motor load connected in sequence; the door motor controller comprises a motor control unit, a motor signal acquiring unit, an acceleration generation unit and a quality identifying unit; the motor control unit and the motor signal acquiring unit are connected with the motor; the quality identifying unit is connected with the motor signal acquiring unit, the motor control unit and the acceleration generation unit; and the acceleration generation unit is also connected with the motor control unit. After the device acquires electric parameters of the motor to obtain the door quality through the motor control unit, the motor signal acquiring unit, the acceleration generation unit and the quality identifying unit, the speed control and the self-adaption control can be performed on the motor according to the door quality, so that the excellent speed response and torque response of a motor speed adjusting system are realized, and meanwhile, the self-adaption control over the door motor is realized.