摘要:
Die Erfindung betrifft ein Abgasenergierückgewinnungssystem mit einem Abgasleitungssystem (111) zum Leiten von Abgasen eines Verbrennungsmotors und mit einer Motor-Generatoreinrichtung (101), welche über Abgasenergie zum Erzeugen von elektrischem Strom antreibbar ist. Das Abgasleitungssystem (111) umfasst einen ersten Leitungsarm (124) zur Motor-Generatoreinrichtung (101) zum Leiten von Abgasen in die Motor-Generatoreinrichtung (101). Diese umfasst einen Motor (100), welcher so angeordnet ist, dass er durch einen Druck von durch ihn strömendem Abgas antreibbar ist. Außerdem wird ein entsprechendes Verfahren zur Abgasenergierückgewinnung beschrieben.
摘要:
An object is to enable low fuel-consumption operation of an engine by controlling a back pressure and a power generation amount taking account of a trade-off relationship between deterioration of fuel efficiency due to an increase in pumping loss due to a back-pressure rise of the engine and improvement of fuel efficiency due to recovery of exhaust energy by a turbo compound. A control system includes: a turbocharger 5; a turbine generator 7; a power-generation-amount control unit 51 of the turbine generator 7; a back-pressure control unit 53 configured to control a back pressure of the engine; and a turbo controller 17 including a power-generation-mode setting unit 31 to set the turbine generator to a low fuel-consumption mode, the turbo controller 17 being configured to, in the low fuel-consumption mode, control the power-generation-amount control 51 unit and the back-pressure control unit 53 so that the engine 3 continues low fuel-consumption operation, on the basis of a relationship between an increase in pumping loss due to a back-pressure rise for rotating the turbine generator 7 and a recovery amount of exhaust energy by the turbine generator 7.
摘要:
Exhaust apparatus 280 includes first conduits 251 and 252 configured to guide gas discharged from a plurality of combustion chambers 100-1 to 100-6 to turbocharger 204, second conduits 261, 262, and 263 that are provided inside the first conduits and guide the gas to the turbocharger, and a plurality of valves 271-1 to 271-6, and 272 that are provided corresponding to the combustion chambers and configured to guide the gas to the first conduit or the second conduit.
摘要:
The invention concerns a method for improving the energy efficiency of a drive system (10), said system comprising: - an engine (12) provided with an exhaust line (14); - a turbocharger (16) having a turbine (18) mounted on the exhaust line to be driven by a first portion of the exhaust gases so as to determine a supercharging level of the engine; - a recovery turbine (20) mounted on the exhaust line parallel to the turbocharger to be driven by a second portion of the exhaust gases so as to recover power from said second portion of the exhaust gases; said method comprising the steps consisting of: - determining a supercharging level in such a way that the engine delivers a first drive power value; - modifying, in an increasing or decreasing manner, at least one geometric parameter of the turbine (18) of the turbocharger (16) and, for a value of the geometric parameter, determining the power recovered by the recovery turbine (20) and the difference between the drive power value corresponding to said geometric parameter value and said first drive power value; - stopping the modification of the geometric parameter of the turbine (18) of the turbocharger (16) when the power recovered by the recovery turbine (20) reaches a maximum value or when said difference in drive power is higher than a given threshold.
摘要:
An exhaust turbo pump of an internal combustion engine has multiple pairs of turbine and compressor wheels rotatable about a common axis, an inner pair of wheels being connected by a tubular shaft rotatable relative to a spindle connecting an outer pair of wheels. One pair of wheels comprises a turbocharger for inlet air, and another pair of wheels comprises a low pressure EGR pump.