公开(公告)号：US20150361869A1

公开(公告)日：2015-12-17

申请号：US14762408

申请日：2013-12-17

Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.

Inventor： Kazuro Hotta

IPC: F02B29/04 ,  F02D41/00

CPC classification number: F02B29/0493 ,  F01P2060/02 ,  F02B29/0412 ,  F02B37/013 ,  F02D41/0007 ,  F02D2200/0406 ,  F02D2200/0414 ,  F02D2200/0418 ,  Y02T10/144 ,  Y02T10/146

Abstract: It is intended to reduce generation of water mist in cooling of compressed air. A multi-stage supercharging system (1) includes a first supercharger (2) of a low-pressure side, an intercooler (3) that cools air discharged from the first supercharger (2), a second supercharger (4) of a high-pressure side that compresses the discharged air after cooling, and a control device (5). The control device (5) includes an information acquisition section that acquires, as input information, the sucked air temperature, the sucked air humidity, the sucked air pressure, and the discharge pressure of the first supercharger (2), a water vapor partial pressure calculation section that calculates the water vapor partial pressure of the discharged air of the first supercharger (2) by using the sucked air temperature, the sucked air humidity, the sucked air pressure, and the discharge pressure of the first supercharger (2) as parameters, a target temperature setting section that sets, as a target temperature, a temperature at which the water vapor partial pressure calculated by the water vapor partial pressure calculation section reaches a saturated water vapor pressure, and a valve opening degree control section that controls the intercooler (3) such that the sucked air temperature of the second supercharger (4) reaches equal to or higher than the target temperature.

Abstract translation: 旨在减少压缩空气冷却时产生的水雾。 多级增压系统（1）包括低压侧的第一增压器（2），冷却从第一增压器（2）排出的空气的中间冷却器（3），高压侧的第二增压器（4） 冷却后压缩排出空气的压力侧和控制装置（5）。 控制装置（5）包括：信息获取部，其获取第一增压器（2）的吸入空气温度，吸入空气湿度，吸入空气压力和排出压力作为输入信息，水蒸气分压 计算部，其通过使用第一增压器（2）的吸入空气温度，吸入空气湿度，吸入空气压力和排出压力作为参数来计算第一增压器（2）的排出空气的水蒸汽分压 目标温度设定部，其将由所述水蒸汽分压计算部算出的水蒸气分压达到饱和水蒸汽压的温度作为目标温度，以及控制中间冷却器的阀开度控制部 （3），使得第二增压器（4）的吸入空气温度达到目标温度以上。

公开(公告)号：US10982621B2

公开(公告)日：2021-04-20

申请号：US16472293

申请日：2017-12-26

Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.

Inventor： Kazuro Hotta ,  Hideaki Nagamochi ,  Go Tomatsu ,  Takahiro Yamashina

IPC: F02D43/00 ,  F02B37/00 ,  F02B37/18 ,  F02B37/24

Abstract: An engine system control apparatus includes a parameter reception unit that receives parameters necessary for acquiring a pressure ratio of the low-pressure compressor and a pressure ratio of the high-pressure compressor, a pressure ratio acquisition unit that acquires the pressure ratio of the low-pressure compressor and the pressure ratio of the high-pressure compressor based on the parameters, an inter-compressor pressure ratio acquisition unit that acquires an inter-compressor pressure ratio obtainable by dividing the pressure ratio of the high-pressure compressor by the pressure ratio of the low-pressure compressor, and a control unit that controls the exhaust gas flowrate adjustment unit such that the inter-compressor pressure ratio becomes a predetermined pressure ratio for optimizing an operation efficiency of the engine system.

公开(公告)号：US10690044B2

公开(公告)日：2020-06-23

申请号：US15541888

申请日：2016-01-12

Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.

Inventor： Kazuro Hotta ,  Yuta Furukawa ,  Kazuo Ogura

IPC: F02B37/013 ,  F02B37/007 ,  F02B37/00

Abstract: A engine system is provided with: a plurality of cylinder groups which burn a gas mixture and discharge an exhaust gas; a plurality of high-pressure stage superchargers each having high-pressure stage turbines driven by the exhaust gas from the corresponding cylinder group and high-pressure stage compressors rotated by driving of the high-pressure stage turbines and configured to compress a gas supplied to the corresponding cylinder group; and a plurality of low-pressure stage superchargers having a low-pressure stage turbine driven by an exhaust gas discharged from the high-pressure stage turbine of the high-pressure supercharger which is any one of the plurality of high-pressure stage superchargers, and a low-pressure stage compressor rotated by driving of the low-pressure stage turbine and configured to compress a gas supplied to the high-pressure stage compressor of the high-pressure stage supercharger other than the one high-pressure stage supercharger.

公开(公告)号：US10557405B2

公开(公告)日：2020-02-11

申请号：US14762408

申请日：2013-12-17

Applicant: Mitsubishi Heavy Industries, Ltd.

Inventor： Kazuro Hotta

IPC: F02B29/04 ,  F02D41/00 ,  F02B37/013

Abstract: It is intended to reduce generation of water mist in cooling of compressed air. A multi-stage supercharging system (1) includes a first supercharger (2) of a low-pressure side, an intercooler (3) that cools air discharged from the first supercharger (2), a second supercharger (4) of a high-pressure side that compresses the discharged air after cooling, and a control device (5). The control device (5) includes an information acquisition section that acquires, as input information, the ambient air temperature, the ambient air humidity, the ambient air pressure, and the discharge pressure of the first supercharger (2), a water vapor partial pressure calculation section that calculates the water vapor partial pressure of the discharged air of the first supercharger (2) by using the ambient air temperature, the ambient air humidity, the ambient air pressure, and the discharge pressure of the first supercharger (2) as parameters, a target temperature setting section that sets, as a target temperature, a temperature at which the water vapor partial pressure calculated by the water vapor partial pressure calculation section reaches a saturated water vapor pressure, and a valve opening degree control section that controls the intercooler (3) such that the ambient air temperature of the second supercharger (4) reaches equal to or higher than the target temperature.