709 results about "Electronic throttle" patented technology

The invention discloses a hierarchical system used for a four-wheel-hub motor-driven electric automobile, and a control method. First of all, yaw moment is calculated as a yaw moment decision-making layer according to a vehicle speed sensor, a steering wheel rotary angle transmitter, an electronic throttle sensor and an inertia measurement unit; then according to automobile longitudinal force constraints, yaw moment constraints, a maximum adhesion force which can be provided by a pavement and restrictions of motor maximum output moment, target torque of each wheel hub motor is calculated as a target optimization analysis layer; and finally, degrees of similarity to six standard pavements are obtained by inputting two parameters, i.e., an adhesion coefficient and a wheel slip rate into a pavement adhesion coefficient estimation fuzzy controller by means of a current pavement, and an adhesion coefficient estimated value of the current pavement is obtained as a pavement adhesion coefficient monitoring layer after weighted averaging is performed. According to the invention, whole-vehicle stability is taken as a control target, motor torque is reasonably distributed according to operation working conditions, and the controllability, the stability and the economic property of vehicles are improved.

The present invention related to an electronic organ type accelerator pedal. The electronic organ type accelerator pedal according to the present invention is capable of enhancing stability by the compression spring having a double structure and the carrier restricting the reverse rotation of the foot plate, while maintaining the benefit of the electronic accelerator pedal which is capable of ensuring space, improving an operation feeling and reducing driver's fatigue since the electronic accelerator pedal is not influenced by tension changes of the cable, and improving fuel efficiency by improving fuel consumption rate.

The invention discloses an electromobile range extender and a control method. The electromobile range extender consists of an engine, an engine ECU (Electronic Control Unit), an electronic throttle valve controller, a direct current starter, an engine speed sensor, an alternating current permanent magnet synchronous motor, a three-phase full-control rectifier, filter capacitors, voltage sampling resistors, a current sensor, a freewheeling diode and a three-phase full-control rectifying voltage regulation phase-shift trigger, wherein the engine is started by the starter and then drags the alternating current permanent magnet synchronous motor to generate electricity and output the three-phase alternating current voltage to the thyristor three-phase full-control rectifier; after the direct current pulsating voltage output by the rectifier is filtered by the two filter capacitors connected in series, the three-phase full-control rectifying voltage regulation phase-shift trigger acquires the output voltage and current of the range extender to obtain the output power, and adjusts a conduction angle according to the power to realize closed-loop control of the power; and the electronic throttle valve controller acquires the engine speed, adjusts the throttle valve opening, and realizes the closed-loop control of the engine speed. The electromobile range extender and the control method have the advantages of low cost and high control precision.

A boat control system can include a propulsion unit controller, a port outboard motor, and a starboard outboard motor. The propulsion unit controller can includes an electronic throttle valve control section, an electronic shift control section, an electronic steering control section, a target control value calculating section, and a GPS receiver. The target control value calculating section can be adapted to calculate engine revolutions and steering angles corresponding to target values of the port outboard motor and the starboard outboard motor based on target values preset by an operator and values detected by the GPS receiver.

The invention relates to emission control for a heavy-duty diesel engine. In order to provide a method and a device for achieving the low emission of the heavy-duty diesel engine through controlling exhaust temperature, the invention adopts an exhaust temperature control unit of the engine. The method comprises the following steps of: (1) respectively reading a rotate speed signal from an engine crankshaft sensor and a load signal from an accelerator pedal sensor by the exhaust temperature electric control unit of the engine; (2) controlling exhaust gas temperature according to the judged result of the step (1); (3) adopting an auxiliary heat preservation measure on an exhaust pipe except adopting variable valve actuation (VVA), an electronic throttle, cold air filling and the like to regulate the exhaust temperature; and (4) optimizing the burning process to increase the jet pressure of fuel, and adopting a flexibly variable jet control strategy. The invention is mainly applied to the emission control for the heavy-duty diesel engine.

An automatic transmission ratio shift and shift feel control system and method for a powertrain having an engine, multiple-ratio gearing controlled by friction elements actuated by hydraulic pressure, an output shaft torque sensor producing a signal representing the magnitude of current output torque, an electronic controller for controlling the target output torque based on the current output torque, increasing the torque capacity of the oncoming friction element and decreasing the torque capacity of the offgoing friction element after a gear ratio change is initiated. During the inertia phase of the ratio change, the controller controls the engine speed to follow a predetermined rate of change of input speed. The strategy employs an electronic throttle and closed loop engine torque control and closed loop engine speed control at various phases of the gear shift, to improve shift feel. Various engine parameters, including throttle position, ignition timing, engine air-fuel ratio, and engine airflow, control engine torque and speed, are used to control input torque or input speed, depending upon the shift phase.

The invention discloses a safety handling method of electronic accelerator signals for an automobile. The method comprises the following steps: carrying out shunt collecting by two ways on original voltage signals of an electronic accelerator pedal through a voltage division circuit; carrying out normalization treatment on the voltage signals of the two-way electronic accelerator pedal to acquirea reliable percentage value; finally selecting the normalization value of the voltage signals of a one-way electronic accelerator pedal as an output value of the electronic accelerator pedal by combining a diagnosis module based on diagnosis signals of a hardware layer and position signals of a brake pedal which are output by a shunt circuit; and simultaneously controlling the numerical value andchange rate of the output value of the electronic accelerator pedal. Therefore, according to the invention, when the voltage signals of the electronic accelerator pedal is abnormal, reasonable and malfunctions, unexpected automobile acceleration and speed reduction actions are avoided through an appropriate judge strategy and a stoppage coping mechanism, thus other motive system control modules which takes the acceleration pedal signals as inputs are ensured to operate safely and reliably.

A steering and engine speed control mechanism for operating a vehicle. The control mechanism has a control handle mounted on the vehicle. The control handle is configured to deflect about an axis by movement of an operator's hand. A steering direction of the vehicle is related to a deflection angle of the control handle about the axis. An actuating element for changing the speed of the engine of the vehicle is attached to the control handle and is conveniently movable by an operator's digit to a plurality of positions to effect the desired speed of the engine.

The invention provides a control method of an electronic throttle valve of an engine; wherein, the control method comprises the following steps of: detecting the initial openness or the current openness of the electronic throttle valve; adopting a basic method to control the duty ratio of a PWM signal when the absolute value of the difference value of the initial openness or the current openness of the electronic throttle valve and the target openness is more than X, so as to control rate of change of the openness of opening or closing the electronic throttle valve; and adopting a PID method to control the duty ratio of the PWM signal when the absolute value of the difference value of the initial openness or the current openness of the electronic throttle valve and the target openness is less than or equal to X, so as to control rate of change of the openness of opening or closing the electronic throttle valve; wherein, the range of the X is 2 degrees to 6 degrees. The control method of the electronic throttle valve of the engine can realize the fastness and smoothness of operation of a throttle valve disc when the difference value is more and can realize the accuracy of the operation of the throttle valve disc and prevent overshoot when the difference value is less.

An engine control system in a vehicle including an internal combustion engine, an electronic throttle controlling air flow to the internal combustion engine, a controller controlling the position of the electronic throttle, an accelerator pedal having an accelerator pedal sensor that generates a signal to the controller, and where the controller computes a rate of change for the accelerator pedal and actuates the electronic throttle to a desired position based upon the rate of change for the accelerator pedal.

The invention provides an automobile starting/stopping system with a traffic light identifying function and a control method thereof, belonging to the technical field of automobiles. Through the system and method thereof, the problem that the vehicle does not have an automatic starting/stopping function in the traffic light condition in the prior art is solved. The system comprises a traffic light detection device, an electronic control unit, a vehicle electronic stability control system and an electronic accelerator pedal, wherein the traffic light detection device is connected with a signal input end of the electronic control unit; and the electronic stability control system (ESC) and the electronic accelerator pedal are connected with a signal output end of the electronic control unit respectively. The control method comprises: A, a step of image signal acquisition; B, a step of image signal pretreatment; C, a step of image analysis treatment; and D, a step of starting/stopping control. The system reduces the driving fatigue of the driver and realizes easier and safer driving.

The invention relates to a device for preventing selected users from driving a vehicle above a particular speed. The speed limit value can be programmed by the selected users by driving the vehicle at a desired speed limit and providing programming instruction. The device provides, from acceleration control signals received from the acceleration pedal, altered acceleration control signals. When in non speed limiting mode, the device simply forwards the acceleration control signals to the engine control unit or the electronic throttle controller. When in speed limiting mode, the device makes no change to the acceleration control signals if the vehicle speed is below the speed limit value and alters the acceleration control signals if the vehicle speed reaches the speed limit value, in order to limit the speed of the car.

The invention discloses an automatic control system which is capable of preventing a driver from mistakenly stepping on an accelerator to cause a traffic accident. The automatic control system capable of effectively preventing mistaken stepping on an accelerator comprises a distance measurement module, a speed sensor, an acceleration sensor, a microprocessor and an audible and visual alarm, wherein the distance measurement module is used for measuring distance S between a self car and a front car or an obstacle, and the microprocessor calculates the current critical safe braking distance S0 according to information obtained by the speed sensor and a road sensor, assigns a safety factor a and marks a safe braking distance S1. When S is bigger than S0 and smaller than S1, the alarm sounds an alarm to remind the driver to take some measures. When S is smaller than S0, if the driver steps on the accelerator, an electronic control unit (ECU) comprehensively processes information acquired by the acceleration sensor and other system information, whether the driver mistakenly steps on the accelerator is judged, if the driver mistakenly steps on the accelerator, an instruction is output to adjust the opening degree of an air valve and cut off an oil supply system to enable the air valve to lose efficacy, and the fact that the car speeds up to move forward due to the fact the driver mistakenly steps on the accelerator in panic is avoided.

The invention relates to a driving anti-skid control system of a hybrid electric vehicle and a control method thereof; the driving anti-skid control system comprises a brake pressure pipe, a vehicle transmission system and a driving anti-skid control electric signal circuit; the brake pressure pipe comprises an air compressor; the air compressor is connected with a brake cylinder through a valve; the output end of the brake cylinder is connected with two front wheel brake chambers and two input ends of a bi-directional single-way valve through two vehicle brake anti-lock regulating valves, a driving anti-skid regulating valve and a brake pipe, and the input end thereof is connected with two rear wheel brake chambers through the other two vehicle brake anti-lock regulating valves; the vehicle transmission system comprises an engine, and the engine is connected with a transmission mechanism assembly through a motor; the driving anti-skid control electric signal circuit comprises four wheel speed sensors arranged near the wheels; the two wheel speed sensors in the front part and the two vehicle brake anti-lock regulating valves are connected with a brake/driving controller; and the brake/driving controller is respectively connected with the driving anti-skid regulating valve, the controller of the complete vehicle, an electronic throttle, a motor controller, the other two wheel speed sensors and the two vehicle brake anti-lock regulating valves. The invention can be widely applied to the anti-skid control systems of various hybrid electric vehicles.

The invention discloses an electronic throttle valve adaptive backstepping control method based on a Romberg sliding-mode observer, and relates to the technical field of automobile electronic control. Firstly, in order to solve the problem that the change of the opening degree of an electronic throttle valve can not be measured, the change is estimated through the Romberg sliding-mode observer and based on the electronic throttle valve state equation; secondly, approaching is conducted on the nonlinear unknown quantity-gear clearance torque through the approaching characteristic of an RBF neural network; finally, a control law, an RBF network weight renewing law and an interference adaptive law are designed based on the Lyapunov stability theory and through combination with the nonlinear backstepping control method. By means of the method, the problem that nonlinear factors and some parameters easily change over time during electronic throttle valve control can be well solved, and the control effect and dynamic response performance are further improved.

An abnormality monitoring device monitors a PWM driving signal output from a driving section of an associated motor control system to judge whether the driving section is operating abnormally. By monitoring the output of the driving section, the monitoring device can detect an abnormality of the driving section before the motor can respond to the abnormal drive signal to a significant degree (e.g., to a degree readily discernable to a rider of a motorcycle on which the motor control system is employed in combination with an electronic throttle system).

The invention discloses a hybrid power vehicle and the control method; wherein, the hybrid power vehicle comprises an internal-combustion engine, a double-rotor motor, an electric motor/generator, a lock-up clutch, a differential, a storage battery, a control unit, an internal-combustion engine managerial system, an electronic accelerator pedal, a brake pedal, and a gear selector. The first rotor of the double-rotor motor is mechanically connected with the crank shaft of the internal-combustion engine. The second rotor of the double-rotor motor drives the vehicle directly via the differential. The electric motor/generator drives the vehicle directly via the differential. The internal-combustion engine drives the vehicle in power distribution (mechanically and electrically) via the double-rotor motor and the electric motor/generator. The invention has the advantages of enabling a plurality of multiple combinations of pure electric drive, pure mechanical drive, mechanical-electric hybrid drive, brake regeneration electricity generation and peakload-adjusting electricity generation.

A watercraft has an engine that is controlled by an electronic control unit and the engine is controlled by an electronic throttle. The electronic throttle is actuated by a motor that is controlled by and electronic control unit. The ECU operates the electronic throttle according to a torque request from an operator. The electronic throttle is also periodically and/or at predetermined time intervals actuated to ensure proper operation of the throttle valve.

A method for controlling an engine having both an electronically controlled inlet device, such as an electronic throttle unit, and an electronically controlled outlet device, such as a variable cam timing system is disclosed. The method of the present invention achieves cylinder air charge control that is faster than possible by using an inlet device alone. In other words, the method of the present invention controls cylinder air charge faster than manifold dynamics by coordination of the inlet and outlet device. This improved control is used to improve various engine control functions.

A control device of a vehicle drive-train system including an engine, an electronic throttle valve, an automatic transmission having a manual shift mode, a torque converter provided between the automatic transmission and the engine, and a lock-up clutch operable to directly connect an input member and an output member of the torque converter with each other includes a blipping control device that performs blipping control for temporarily increasing the output rotational speed of the engine by means of the electronic throttle valve, when a power-off downshift is performed while the automatic transmission is in the manual shift mode; and a lock-up control device that engages or partially engages the lock-up clutch, based on a difference between a rotational speed of the output member of the torque converter and a rotational speed of the input member thereof, which the difference is reduced after the blipping control is started.