235results about How to "Improve acceleration" patented technology

A hybrid input differential engine system comprising a planetary gear set. Preferably, an ICE is connected to the planet gear carrier, the output shaft is connected to the ring gear, and the sun gear is connected to a supercharger / expander and an electric or hydraulic motor / generator. As engine torque increases, the supercharger speeds up, increasing torque still further, enabling a small displacement engine to have very high torque at low RPM. In cruise conditions, the sun gear direction is reversed by the motor / generator, causing the supercharger to act as an expander for efficiently throttling the engine. The motor / generator modulates the speed / torque relationships between the engine and the supercharger / expander. A second motor / generator may be used on the output shaft. The electric machines and electric storage may be downsized because less electrical power is needed for the operation of the system.

In a hybrid car, or an electric motor-driven four-wheel-drive vehicle, in which an electric motor is driven directly by an output from a generator, vehicle running performance is enhanced. The output from the generator is controlled so as to maintain a generator torque in a range, in which the vehicle does not stall. Specifically, a driving apparatus for the hybrid car includes a second generator 2 driven by an engine 1 for driving one pair of either front or rear wheels 14, 15 , an electric motor 5 driven through directly receiving the output from the second generator 2 and driving the other pair of either the front or rear wheels 14, 15 , and a four-wheel-drive control unit 6 controlling driving of the second generator 2 and the electric motor 5 . When the engine 1 is in an overloaded condition, the four-wheel-drive control unit 6 limits the output of the second generator 2.

A system and method are disclosed for controlling the positioning of a movable member of a valve device by an electric actuator. A model is used to generate estimates for the position and velocity of the movable valve member that result from an actuator control signal being applied to drive the electric actuator. The actuator control signal comprises a feedback control signal combined with a feedforward control signal. The feedback control signal is generated based upon a difference between the estimated and actual positions of the movable valve member, while the feedforward control signal is generated based upon the desired position, the estimated position, and the estimated velocity. The feedforward signal is adjusted to cause the estimated velocity to approximately follow a defined maximum deceleration velocity trajectory as the estimated position of the movable valve member moves to the desired position. An exemplary embodiment is presented where the principles of the invention are applied to the control of an electronic throttle valve.

The invention relates to an internal combustion engine intake gate and exhaust gate control method, belonging to the fields of internal combustion engine intake and exhaust systems and brake. In the control method, two drive modes of high compression ratio and low expansion ratio or low compression ratio and high expansion ratio, and a brake mode of air intake from the intake gate and air exhaustfrom the exhaust gate of a turbocharging internal combustion engine, and a brake mode of a naturally aspirated internal combustion engine are proposed, so as to achieve the control method of the intake gate and exhaust gate in these modes. By using the high compression ratio and low expansion ratio mode for low speed and high torque, tableland environment and acceleration condition, and low compression ratio and high expansion ratio mode for high speed and heavy load condition of the turbocharging internal combustion engine, in combination, the dynamic property, accelerating ability and high speed performance for low speed and high torque and tableland condition are simultaneously improved. By using the brake mode to convert the internal combustion engine with 720 degree per cycle to an air compressor with 360 degree per cycle, an auxiliary brake system of a vehicle is replaced, thus the brake of the internal combustion engine is realized, and the effect of adjustable brake by regulation of the starting parameters of air gates is realized.