43 results about "Engine tuning" patented technology

Tuning processes implemented by an auto-tune controller are provided for measuring and adjusting the combustion dynamics and the emission composition of a gas turbine (GT) engine via a tuning process. Initially, the tuning process includes monitoring parameters, such as combustion dynamics and emission composition. Upon determining that one or more of the monitored parameters exceed a critical value, these “out-of-tune” parameters are compared to a scanning order table. Upon comparison, the first out-of-tune parameter that is matched within the scanning order table is addressed. The first out-of-tune parameter is then plotted as overlaid slopes on respective graphs, where the graph represents a fuel-flow split. Typically, the slopes are plotted as a particular out-of-tune parameter against a particular fuel-flow split. The slopes for each graph are considered together by taking into account the combined impact on each out-of-tune parameter when a fuel-flow split is selected for adjustment.

Various methods and systems are provided for a multi-fuel capable engine. In one example, a system comprises an engine having at least one cylinder controlled via an intake valve, a first fuel system to deliver liquid fuel and a second fuel system to deliver gaseous fuel to the at least one cylinder, a variable valve timing actuation system to adjust one or more of an opening or a closing timing of the intake valve, and a controller. The controller is configured to, during a liquid fuel only mode, adjust the variable valve timing actuation system to close the intake valve at a first timing based at least on engine load, and during a multi-fuel mode, adjust the variable valve timing actuation system to close the intake valve at a second timing.

A method of controlling a hybrid drive-train of a vehicle having a combustion engine with a driveshaft, a transmission with an input shaft and an output shaft that drives a transfer box. An electric machine has a rotor that is connected to the transmission input shaft. A separator clutch is arranged between the engine driveshaft and the transmission input shaft. For coupling of the engine, the engine is first accelerated, with a rotational speed regulation, toward a target speed until a reference speed is reached or exceeded while the clutch remains disengaged, then, with continuous speed regulation, the engine is adjusted to a corrected target speed while the clutch is engaged until a target torque is obtained, then, with torque control, the engine is adjusted to the target torque while the clutch, with differential rotational speed regulation, is regulated to a target speed difference, and finally the clutch is engaged.

The invention provides a torque control method and device for a hybrid electric vehicle and electronic equipment. The torque control method comprises the steps: calculating a rotating speed differencevalue of a driving end and a driven end of a first clutch in real time when detecting to find that a depth value of an accelerator pedal is larger than a depth threshold value; judging whether absolute values of all rotating speed difference values obtained by calculation within a preset time period are smaller than a rotating speed difference threshold value or not; if not, calculating a demanded torque value of the driving end of the first clutch, and controlling an engine to regulate an engine torque value according to the demanded torque value and a current rotating speed difference valueof the driving end and the driven end of the first clutch; and calculating a torque difference value of the demanded torque value and the regulated engine torque value, and controlling a first motorto regulate a first motor torque value according to the torque difference value. According to the method disclosed by the invention, the torque values of the engine and the first motor are coordinatedand controlled according to the demanded torque value of the driving end of the first clutch, so that the aim of rapidly regulating the rotating speed of the driving end of the first clutch is achieved, and thus, the smoothness in a switching process of a driving system is guaranteed.

The present disclosure is generally directed to a simulated aircraft engine (12) accelerometer apparatus, system and method that that generates aircraft engine (12) simulator outputs. An accelerometer signal simulator (320) receives aircraft engine (12) simulator outputs and generates accelerometer signal simulator (320) outputs, and an accelerometer waveform generator (350) receives the accelerometer signal simulator (320) outputs and synchronizes at least one accelerometer signal simulator (320) outputs to a reference timing signal from one of the aircraft engine (12) simulator outputs. The simulated accelerometer (300) further includes a filter section (372, 374, 376 and 378) that receives and filters noise from the plurality of accelerometer waveform generator (350) outputs to generate a plurality of filtered accelerometer waveform generator (350) outputs, a mixer (380) that receives and combines each of the plurality of filtered accelerometer waveform generator (350) outputs to generate a single filtered accelerometer waveform generator (350) output, and a charge converter (382) that receives and converts the single filtered accelerometer waveform generator (350) output to a current charge vibration simulation output.

A trim balance for a gas turbine engine having a hollow rotatable rotor shaft includes an elongate support rod adapted for longitudinal accommodation within and mounting on an interior surface of the rotor shaft and one or more apertured balance weights supported on the support rod which extends through the weight apertures and a weight retainer for retaining the weights on the support rod.

The invention provides a control method of a dual-fuel engine. The control method comprises the steps of detecting whether the left gasoline amount and the left diesel amount are sufficient; judging whether a discharge lowest mode instruction or a power optimal mode instruction is received or not if the left gasoline amount and the left diesel amount are sufficient; judging whether the price different of gasoline and diesel is higher than a first threshold value or not if the left gasoline amount and the left diesel amount are not sufficient; further controlling the engine to adjust the consumption ratio of the gasoline to the diesel according to the price different of the gasoline and the diesel so as to reduce the running cost of the engine if the price different of gasoline and diesel is higher than the first threshold value, and controlling and running the engine in a normal working mode if the price different of gasoline and diesel is not higher than the first threshold value. A vehicle applying the control method has the advantages of being low in energy consumption and low in running cost. The invention further provides a control system of the dual-fuel engine and the vehicle.

Methods and systems are provided for improving engine knock control by accounting for a drop in charge cooling efficiency of a knock control fluid at higher temperatures. In response to the prediction of an elevated temperature of a knock control fluid at a time of release from a direct injector, a pulse width of the injection is adjusted. Any knock relief deficits are compensated for using alternate engine adjustments, such as boost or spark timing adjustments.

The present invention relates to the field of hybrid vehicles, and in particular to a hybrid vehicle creep torque control method and a hybrid vehicle. The hybrid vehicle is specifically a P2 architecture-based hybrid vehicle configured with a dual clutch transmission, and the creep torque control method includes: obtaining a desired target creep torque; controlling an engine of the hybrid vehicleto output constant actual engine torque; dynamically controlling the engine of the hybrid vehicle according to relationships between the target creep torque and actual engine torque, to obtain the actual creep torque corresponding to the target creep torque. Thus, the invention provides a novel hybrid vehicle creep torque control method and a hybrid vehicle. Through making the engine to output constant torque and dynamically controlling the torque output by the engine, control of the creep torque of a dual clutch transmission of a hybrid vehicle becomes easy, and workload on engine tuning is reduced.

The invention relates to the technical field of vehicle control, and particularly discloses a gear shifting control method of a P2 hybrid vehicle. According to the gear shifting control method of a P2hybrid vehicle, when the vehicle shifts a gear, an engine adjusts a rotating speed, meanwhile, a power motor reduces a torque, and a gearbox is out of gear and selects the gear to a target gear; power interruption time in a gear shifting process is reduced; and clutch wear is reduced, the engine actively adjusts the speed in the gear selecting process of the gearbox, then the clutch is quickly combined to synchronize the rotating speed of a first shaft of the gearbox to a rotating speed value of the target gear within an extremely short time, a rotating speed difference between the first shaft and the output shaft of the gearbox in a gear engaging process and an impact on a gear wheel in the gearbox in the gear engaging process are reduced, and vehicle gear shifting smoothness is improved.

The invention discloses a multifunctional timing chain wheel cover, comprising a timing chain wheel cover and characterized in that: a first chain guide groove is respectively arranged on a position to be meshed between a timing chain inside the timing chain wheel cover and a steam exhaust side chain wheel of a camshaft and a position of a steam admission side chain wheel of the camshaft to be separated, and a second chain guide groove is arranged on the timing chain and a crankshaft chain wheel; grooves are arranged at the top of the timing chain wheel cover corresponding to a steam admission camshaft bolt and a steam exhaust camshaft bolt, and a semicircle gel block is correspondingly arranged in the groove; and the timing chain wheel cover comprises two parts: a metal part and a transparent visual part corresponding to a hydraulic tensioner. The structure helps prevent a timing chain system from jumping over teeth in virtue of the chain guide groove arranged on the timing chain cover, simplify a work process of the engine for adjusting phases in virtue of the arranged removable semicircle gel block and facilitate directly observing work condition of the hydraulic tensioner in virtue of an arranged visual part.

It is a challenge to adapt an engine designed to be fuelled with first fuel to be fuelled with multiple types of fuel when a base engine electronic control unit cannot be adapted as well. A multi-fuelinternal combustion engine that can be fuelled with at least one of first and second fuel comprises a first fuel injector for introducing the first fuel directly into a combustion chamber; a first electronic controller programmed to generate a first injector drive signal for actuating the first fuel injector; a second fuel injector for introducing the second fuel upstream of an intake valve; a second electronic controller programmed to generate a second injector drive signal for actuating the second fuel injector; an emulation injector comprising an electrical characteristic representative ofa first fuel injector electrical characteristic; and an injector select apparatus operatively connected with the second electronic controller for selectively applying the first injector drive signalto one of the first fuel injector and the emulation injector. The second electronic controller is programmed to generate the second injector drive signal as a function of the first injector drive signal and to command the injector select apparatus to apply the first injector drive signal to one of the first fuel injector and the emulation injector.

The invention discloses intelligent pouring type asphalt concrete stirring equipment and method. The equipment comprises a chassis, a housing fixed on the chassis, a stirring tank fixed in the housing, a stirring shaft passing through the stirring tank, a stirring shaft driving device, a heating device, a PLC, an engine adjusting circuit and a feeding gate openness sensor, wherein the PLC controls the apparatus elements to intelligently control comprehensive maintenance equipment, so that the work efficiency is effectively improved, the engineering cost is lowered, and the equipment and the method have important meaning on current large-scale municipal construction.

The embodiment of the invention discloses a torque reduction amount determination method and device, a vehicle and a storage medium. The method comprises the steps of: detgermining the torque reduction coefficient corresponding to the current upshift process of the vehicle and the target rotating speed of an engine; determining a target torque reduction amount of the engine in the current upshift process according to the rotational inertia, the torque reduction coefficient and the target rotation speed of the engine; and sending the target torque reduction amount to an engine controller, so that the engine controller adjusts the rotating speed of the engine in the current upshift process according to the target torque reduction amount, and the difference value between the adjusted rotating speed of the engine and the target rotating speed meets the preset condition. According to the scheme, the target torque reduction amount of the engine in the current upshift process can be determined according to the torque reduction coefficient of the vehicle in the current upshift process, the target rotating speed of the engine and the rotational inertia of the engine, automatic determination of the torque reduction amount is achieved, a large number of real vehicle tests and calibration are not needed, and a large number of manpower and material resources are saved; and the determination efficiency and accuracy of the torque reduction amount are improved.

The invention relates a clutch control device, system and method and a vehicle. The clutch control method is used for controlling the clutch engagement when the gear shift is completed, and comprisesthe following steps of collecting the flywheel rotation speed of an engine and the friction plate rotation speed of a clutch; controlling a friction plate of the clutch to move with a flywheel of theengine in a linkage mode so as to make the clutch be engaged when the speed difference between the flywheel rotation speed and the friction plate rotation speed is within a predefined first differencerange; and controlling the engine to adjust the rotation speed of the flywheel and returning to the step of collecting the flywheel rotation speed of the engine and the friction plate rotation speedof the clutch when the rotation speed difference is not within the predefined first difference range. The clutch control method is capable of controlling the time of the clutch engagement automatically, and avoiding problems caused by too fast or too slow clutch engagement.

The invention discloses an aircraft engine insertion mounting device and an aircraft engine insertion mounting method. The aircraft engine insertion mounting device comprises an AGV (automatic guidedvehicle) transport vehicle, a scissor fork lifting mechanism, an engine adjustment mechanism, an engine placing frame, a work platform and a laser positioning lamp, wherein the AGV transport vehicle drives the whole mounting device to move to a designated position, the work platform is placed on a table board of the AGV transport vehicle, the engine placing frame bears an engine, the engine adjustment mechanism is mounted on the scissor fork lifting mechanism, and can move up and down under drive of the scissor fork lifting mechanism, the laser positioning lamp is mounted at the rear end of the engine adjustment mechanism, the direction of laser beams sent by the laser positioning lamp guides the movement locus of the engine, and the engine adjustment mechanism hoists the engine, performsaccurate adjustment for the spatial position of the engine, and sends the engine to a mounting position in an engine mounting cabin.

A method of detecting illegal tuning of the vehicle may include obtaining and storing, by a controller, at least one of learning information including a variable value and a control value and engine state information at a time of controlling the vehicle while the vehicle is driven, as a learning value; comparing, by the controller, a learning value, which is newly obtained over time, with a prestored previous learning value; determining, by the controller, that a tuning chip for changing component performance in the vehicle is mounted when the learning value is changed and there remains a difference between the obtained learning value and the prestored previous learning value at a predetermined level or higher for a predetermined period of time; and creating and storing, by the controller, a tuning detection code when it is determined that the tuning chip is mounted.

The invention provides a rocket orbit injection control method and device. The method comprises the steps that a trajectory inclination angle when a rocket enters an orbit is obtained; the absolute value of the trajectory inclination angle is compared with a first preset value; and if the absolute value of the trajectory inclination angle is larger than the first preset value, the posture of the rocket is adjusted by correcting an engine, and the rocket is made to move according to the orbit. The invention further provides the rocket. According to the rocket orbit injection control method anddevice, the trajectory inclination angle when the rocket enters the circular orbit is compared with the first preset value, the posture of the rocket when the rocket enters the orbit is obtained, theposture of the rocket is adjusted in real time by correcting the engine, the rocket is made to move according to the orbit, the problem that when an accelerometer of the rocket breaks down, an iterative guidance algorithm cannot be used for conducting flight guidance on the rocket is solved, and the safety coefficient of the rocket is increased.

Systems and methods for operating a vehicle that includes an engine and an electric machine are described. In one example, operation of the engine may be adjusted to compensate for conditions when carbon deposits may build on one or more engine spark plugs. The engine adjustments may help to remove carbon deposits from the engine's spark plugs.

The invention discloses a racing car gear shifting control method, device and equipment and a storage medium. The method comprises the steps that longitudinal force on a gear shifting rod is obtained, and a gear shifting sensing signal of a current racing car is determined according to the longitudinal force; current gear information of the current racing car and current operation information of an engine are obtained, and engine adjustment information is determined according to the gear shifting sensing signal, the current gear information and the current operation information of the engine; the oil injection quantity, the oil injection rate and the ignition time of the engine are adjusted in advance according to the engine adjusting information, and when a gear shifting instruction is received, the engine is controlled to operate; and the gear shifting intention of a driver can be rapidly recognized, matching is made before the driver shifts gears, compared with a traditional passive control strategy, the experience that the gear shifting speed is higher, and the driving feeling is smoother is achieved, and the speed and efficiency of racing car gear shifting control are improved.