Patents by Inventor Guangdi Hu
Guangdi Hu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9874164Abstract: An apparatus for controlling an air system of a diesel engine in a steady state. The air system comprises a waste gas recycling system and a turbocharging system.Type: GrantFiled: August 26, 2011Date of Patent: January 23, 2018Assignee: WEICHAI POWER CO., LTD.Inventors: Guangdi Hu, Dehui Tong
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Patent number: 9689292Abstract: Disclosed are an apparatus and a method for controlling a urea injection system of a diesel engine. The apparatus (200) comprises: an operation condition parameter acquiring module (201), a control quantity determining module (202) and a drive signal determining module (203), wherein the operation condition parameter acquiring module (201) is configured to acquire operation condition parameters related to the urea injection system, the control quantity determining module (202) is configured to determine a control quantity for controlling the urea injection system based on the operation condition parameters, a target value of urea pressure in a urea buffer chamber (107) and a control model designed based on a physical model of the urea injection system, and the drive signal determining module (203) is configured to determine a drive signal for a urea pump (103) drive motor (106) according to the determined control quantity.Type: GrantFiled: April 19, 2011Date of Patent: June 27, 2017Assignee: Weichai Power Co., Ltd.Inventors: Guangdi Hu, Shaojun Sun, Dehui Tong, Shenggang Guo, Yongliang Sun
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Patent number: 9664157Abstract: An apparatus for controlling a high pressure common rail system of a diesel engine includes an operation condition parameter acquiring module configured to acquire operation condition parameters associated with the high pressure common rail system; a control quantity determining module coupled with the operation condition parameter acquiring module and configured to determine a control quantity for controlling the high-pressure common rail system based on the operation condition parameters, a target value of the fuel pressure within a high pressure common rail tube cavity and a control model designed based on a system physical model, wherein the control quantity is an equivalent cross-section area of the electromagnetic valve of a flow metering unit; and a drive signal determining module coupled to the control quantity determining module and configured to determine a drive signal for driving the flow metering unit based on the determined control quantity.Type: GrantFiled: April 19, 2011Date of Patent: May 30, 2017Assignee: Weichai Power Co., Ltd.Inventors: Guangdi Hu, Shaojun Sun, Dehui Tong
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Patent number: 9624889Abstract: An apparatus (200) for controlling the rail pressure of the high-pressure common-rail tube cavity of the high-pressure common-rail fuel system of an engine, comprising an operation condition acquiring device (202), which is used for acquiring operation conditions associated with the high-pressure common-rail fuel system of the engine; a fuel quantity metering valve equivalent cross-sectional area determining device (204) coupled with the operation condition acquiring device (202), which is used for determining an equivalent cross-sectional area of the fuel quantity metering valve (210) by a linear physical model (212) of fuel quantity metering valve equivalent cross-sectional area based on an acquired operation condition and a target value of the rail pressure of the high-pressure common-rail tube cavity; a signal generating device (206) coupled with the fuel quantity metering valve equivalent cross-sectional area determining device (204), which used for generating a driving signal (208) for controlling the eType: GrantFiled: April 19, 2011Date of Patent: April 18, 2017Assignee: Weichai Power Co., Ltd.Inventors: Guangdi Hu, Shaojun Sun, Dehui Tong
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Patent number: 9534533Abstract: A control device and method for the air system of a diesel engine is disclosed. The feature of the diesel engine is characterized by transfer function. During the control process, a decoupling transfer function is computed according to the transfer function and the steady working parameters of the diesel engine. By the decoupling transfer function acting on the processed state parameters of the air system, driving signals for controlling the exhaust gas recirculation system and the turbocharge system can be individually generated from one another, in order to realize decoupling of them.Type: GrantFiled: January 27, 2011Date of Patent: January 3, 2017Assignee: Weichai Power Co., Ltd.Inventors: Guangdi Hu, Shaojun Sun, Dehui Tong, Shenggang Guo, Yingli Gong
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Patent number: 9212629Abstract: An equipment (200) for controlling an air system of a diesel engine, comprises an operation condition acquiring device (202), an objective flow determining device (204) and a signal generating device (206). The operation condition acquiring device (202) is used to acquire actual operation condition parameters of the diesel engine. The objective flow determining device (204) is used to determine objective flow parameters on the basis of the actual operation condition parameters from the operation condition acquiring device (202), through a non-linear physical model which characterizes the air system. The signal generating device (206) is used to generate signals for controlling an EGR system and a turbocharge system on the basis of the objective flow parameters from the objective flow determining device (204). A method for controlling an air system of a diesel engine and a computer program medium recording the computer program code for performing the method are also disclosed.Type: GrantFiled: January 27, 2011Date of Patent: December 15, 2015Assignee: Weichai Power Co., Ltd.Inventors: Guangdi Hu, Shaojun Sun, Dehui Tong, Xiaolin Zhang
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Publication number: 20150337748Abstract: An apparatus for controlling an air system of a diesel engine in a steady state. The air system comprises a waste gas recycling system and a turbocharging system.Type: ApplicationFiled: August 26, 2011Publication date: November 26, 2015Applicant: WEICHAI POWER CO., LTD.Inventors: Guangdi Hu, Dehui Tong
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Publication number: 20140271424Abstract: An apparatus (100) used in a selective catalytic reduction system of a diesel engine is disclosed, wherein the SCR system comprises a catalyst to use ammonia to convert nitrogen oxides discharged from the diesel engine, the apparatus (100) comprising: an acquiring module (102) coupled to the catalyst and configured to acquire a measurement value of at least one operation condition of the catalyst; and a determining module (104) coupled to the acquiring module and configured to determine ammonia storage capacity of the catalyst based on the acquired measurement value so as to determine ammonia surface coverage of the catalyst. A corresponding method and a computer program product thereof are further disclosed. According to the apparatus (100) and method, the ammonia surface coverage and ammonia storage capacity of the catalyst may be estimated more accurately.Type: ApplicationFiled: October 9, 2011Publication date: September 18, 2014Applicant: WEICHAI POWER CO., LTD.Inventors: Guangdi Hu, Shaojun Sun
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Publication number: 20140109570Abstract: A control device and method for the air system of a diesel engine is disclosed. The feature of the diesel engine is characterized by transfer function. During the control process, a decoupling transfer function is computed according to the transfer function and the steady working parameters of the diesel engine. By the decoupling transfer function acting on the processed state parameters of the air system, driving signals for controlling the exhaust gas recirculation system and the turbocharge system can be individually generated from one another, in order to realize decoupling of them.Type: ApplicationFiled: January 27, 2011Publication date: April 24, 2014Applicant: WEICHAI POWER CO., LTD.Inventors: Guangdi Hu, Shaojun Sun, Dehui Tong, Shenggang Guo, Yingli Gong
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Publication number: 20140047820Abstract: Disclosed are an apparatus and a method for controlling a urea injection system of a diesel engine. The apparatus (200) comprises: an operation condition parameter acquiring module (201), a control quantity determining module (202) and a drive signal determining module (203), wherein the operation condition parameter acquiring module (201) is configured to acquire operation condition parameters related to the urea injection system, the control quantity determining module (202) is configured to determine a control quantity for controlling the urea injection system based on the operation condition parameters, a target value of urea pressure in a urea buffer chamber (107) and a control model designed based on a physical model of the urea injection system, and the drive signal determining module (203) is configured to determine a drive signal for a urea pump (103) drive motor (106) according to the determined control quantity.Type: ApplicationFiled: April 19, 2011Publication date: February 20, 2014Applicant: WEICHAI POWER CO., LTD.Inventors: Guangdi Hu, Shaojun Sun, Dehui Tong, Shenggang Guo, Yongliang Sun
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Publication number: 20140041634Abstract: An apparatus (200) for controlling a high pressure common rail system of a diesel engine comprises an operation condition parameter acquiring module (201) configured to acquire operation condition parameters associated with the high pressure common rail system; a control quantity determining module (202) coupled with the operation condition parameter acquiring (201) module and configured to determine a control quantity for controlling the high-pressure common rail system based on the operation condition parameters, a target value of the fuel pressure within a high pressure common rail tube cavity and a control model designed based on a system physical model, wherein the control quantity is an equivalent cross-section area of the electromagnetic valve of a flow metering unit; and a drive signal determining module (203) coupled to the control quantity determining module (202) and configured to determine a drive signal for driving the flow metering unit based on the determined control quantity.Type: ApplicationFiled: April 19, 2011Publication date: February 13, 2014Applicant: WEICHAI POWER CO., LTD.Inventors: Guangdi Hu, Shaojun Sun, Dehui Tong
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Publication number: 20140034022Abstract: An apparatus (200) for controlling the rail pressure of the high-pressure common-rail tube cavity of the high-pressure common-rail fuel system of an engine, comprising an operation condition acquiring device (202), which is used for acquiring operation conditions associated with the high-pressure common-rail fuel system of the engine; a fuel quantity metering valve equivalent cross-sectional area determining device (204) coupled with the operation condition acquiring device (202), which is used for determining an equivalent cross-sectional area of the fuel quantity metering valve (210) by a linear physical model (212) of fuel quantity metering valve equivalent cross-sectional area based on an acquired operation condition and a target value of the rail pressure of the high-pressure common-rail tube cavity; a signal generating device (206) coupled with the fuel quantity metering valve equivalent cross-sectional area determining device (204), which used for generating a driving signal (208) for controlling the eType: ApplicationFiled: April 19, 2011Publication date: February 6, 2014Applicant: WEICHAI POWER CO., LTD.Inventors: Guangdi Hu, Shaojun Sun, Dehui Tong
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Publication number: 20140000573Abstract: An equipment (200) for controlling an air system of a diesel engine, comprises an operation condition acquiring device (202), an objective flow determining device (204) and a signal generating device (206). The operation condition acquiring device (202) is used to acquire actual operation condition parameters of the diesel engine. The objective flow determining device (204) is used to determine objective flow parameters on the basis of the actual operation condition parameters from the operation condition acquiring device (202), through a non-linear physical model which characterizes the air system. The signal generating device (206) is used to generate signals for controlling an EGR system and a turbocharge system on the basis of the objective flow parameters from the objective flow determining device (204). A method for controlling an air system of a diesel engine and a computer program medium recording the computer program code for performing the method are also disclosed.Type: ApplicationFiled: January 27, 2011Publication date: January 2, 2014Applicant: WEICHAI POWER CO., LTD.Inventors: Guangdi Hu, Shaojun Sun, Dehui Tong, Xiaolin Zhang
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Patent number: 7814752Abstract: A fluid control system for an engine is disclosed. The fluid control system may have a first fluid control component, a second fluid control component, and a controller in communication with the first and second fluid control components. The controller may be configured to determine an operational change associated with the first fluid control component to achieve desired operation of the engine. The controller may also be configured to determine an effect the operational change will have on performance of the second fluid control component, and adjust operation of the second fluid control component to accommodate the effect substantially simultaneously with implementation of the operational change.Type: GrantFiled: February 28, 2007Date of Patent: October 19, 2010Assignee: Caterpillar IncInventor: Guangdi Hu
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Publication number: 20080208432Abstract: A fluid control system for an engine is disclosed. The fluid control system may have a first fluid control component, a second fluid control component, and a controller in communication with the first and second fluid control components. The controller may be configured to determine an operational change associated with the first fluid control component to achieve desired operation of the engine. The controller may also be configured to determine an effect the operational change will have on performance of the second fluid control component, and adjust operation of the second fluid control component to accommodate the effect substantially simultaneously with implementation of the operational change.Type: ApplicationFiled: February 28, 2007Publication date: August 28, 2008Inventor: Guangdi Hu