8 results about "Compressor map" patented technology

A method for controlling a variable supercharger (501) for an engine system (500), comprising: Pressurizing an intake air (510) by a compressor (508) of the variable supercharger (501), Driving the variable supercharger (501) with a gearbox (522), Receiving, at a control unit (530), a desired first condition for the intake air (510) from the engine system (500), Calculating, at the control unit (530), a second state of the intake air (510) from the operating speed of the engine system (500) and from operating conditions of the engine system (500) corresponding to the desired first state, Determining a desired compressor speed (536) corresponding to the desired first state and the second state of the intake air (510) from a compressor map (540), Switching the transmission (522) to drive the compressor (508) to the desired compressor speed (536) to provide the desired first intake air condition (510) to the engine system (500), wherein the first state of the intake air (510) is a boost pressure (132) of the intake air (510) and the second state of the intake air (510) is a mass flow rate of the intake air (510).

Methods for a turbocharged engine, comprising: Adjusting a pressure surge line of a compressor map during vehicle operation as a function of vehicle speed.

A method and system of detecting mass air flow (MAF) sensor failure on an aircraft includes at least one signal from a non-MAF sensor received by a controller of a fuel cell system having at least one MAF sensor. The signal received by the controller is analyzed relative to a compressor map to estimate mass air flow. A MAF sensor failure is detected based on the estimated mass air flow. When a MAF sensor failure is detected, a safe operating mode of the fuel cell system may be activated to provide adequate power for operation of the aircraft to a safe landing while minimizing risk of damage to the fuel cell system.

Propulsion system comprising at least one turbomachine (1) and a high-temperature fuel cell (3) connected to an electrical circuit (4); the turbomachine (1) comprising at least one compressor (11) and one combustion chamber (12); the fuel cell comprising at least one electrochemical cell (31), a fuel supply circuit (32) for the electrochemical cell, an air supply circuit (33) for the electrochemical cell, and an exhaust circuit (35) for air and water vapor from the electrochemical cell. The air supply circuit comprises a valve device (36) having a first inlet connected to an outside air intake and a second inlet connected to a port of the turbomachine compressor for selectively connecting the air supply circuit to the outside air intake and the compressor port. FIGURE IN ABBREVIATION: [Fig. 1]

A soundproof device 30 for a duct 15 e.g. an intake duct for a compressor (fig.1, 11) of a gas turbine (fig.1, 13), comprising a first sound absorbing material 31 disposed on one side a an outer wall

Methods and systems for surge control in a compressor system. A recirculation valve position may be actuated in response to identified conditions of potential surge, determined from a compressor map. Recirculation valve position may be controlled by calculating distance of current operating state to a surge line and using proportional integral control to manage the distance. Compressor speed command may be derated in response to identified surge, determined from one of speed fluctuations of the compressor speed, or variance of a compressor speed tracking error.

A high-precision compressor diagram design method during starting of an aero-engine windmill comprises the steps that in the engine windmill starting process of an aero-engine, according to a function calculation program fIEM of an isentropic efficiency diagram, the isentropic efficiency eta of a compressor is obtained in the current state (represented by the conversion rotating speed Ncor and the pressure ratio pi of the compressor), and according to the isentropic efficiency eta, the temperature rise delta Tt, base of an outlet of the compressor is calculated; according to the function calculation program fTIM of the temperature rise diagram, the compensation temperature rise delta Tt, compenalization of the gas compressor is obtained in the current state; according to a cubic spline fusion function calculation program fIntegrating, respectively obtaining fusion coefficients Wbase and Wcompension of the two temperature rises in a current state; and according to the cubic spline fusion function calculation program fIntegrating, respectively obtaining a fusion coefficient Wbase and a fusion coefficient Wcompension of the two temperature rises in the current state; and fusing the isentropic efficiency diagram and the temperature rise diagram according to the fusion coefficients Wbase and Wcompenalization to obtain the final temperature rise delta Tt, final of the gas compressor.

Methods and systems for surge control in a compressor system. A recirculation valve position may be actuated in response to identified conditions of potential surge, determined from a compressor map. Recirculation valve position may be controlled by calculating distance of current operating state to a surge line and using proportional integral control to manage the distance. Compressor speed command may be derated in response to identified surge, determined from one of speed fluctuations of the compressor speed, or variance of a compressor speed tracking error.