Patents by Inventor Jiubo Ma

Jiubo Ma 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).

  • Publication number: 20140216410
    Abstract: A fuel injection system for a fuel system of a compression-ignition engine is disclosed. In the current disclosure, the fuel injection system includes a common rail, at least one control valve, and a controller. The common rail may be configured to receive fuel from a fuel pump of the fuel system. The at least one control valve may be in fluid communication with the common rail and at least one fuel nozzle of the fuel system. The at least one control valve may be configured to receive fuel from the common rail. Further, the at least one control valve may be configured to supply fuel to the at least one fuel nozzle. The controller may be configured to control the at least one control valve.
    Type: Application
    Filed: April 4, 2014
    Publication date: August 7, 2014
    Applicant: Caterpillar Inc.
    Inventors: Tian Ye, Jiubo Ma
  • Patent number: 7975479
    Abstract: A heat exchanger for a fluid handling system is disclosed. The heat exchanger may have an inlet configured to receive a fluid at a first temperature, and an outlet configured to discharge the fluid at a second temperature lower than the first. The heat exchanger may also have at least one fluid passageway disposed to conduct the fluid from the inlet to the outlet. The at least one fluid passageway may have a first section fabricated from a first material, and a second section fabricated from a dissimilar second material. At least one of the first and second materials may include a thermally conductive polymer.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: July 12, 2011
    Assignee: Caterpillar Inc.
    Inventors: Orhan Altin, Rishabh Sinha, Jiubo Ma, Kent Clark Bates
  • Patent number: 7878233
    Abstract: An air-to-air aftercooler may include at least one tube body configured to direct a flow of charged air, wherein the at least one tube body includes a first material. The air-to-air aftercooler may also include a header assembly coupled to ends of the at least one tube body. The header assembly may include a second different material.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: February 1, 2011
    Assignee: Caterpillar Inc
    Inventors: Kent C. Bates, Jiubo Ma, Rishabh Sinha
  • Publication number: 20100175861
    Abstract: A tube assembly for a beat exchanger is provided having a first U-shaped stainless steel assembly component and a second U-shaped stainless steel assembly component. In addition, the tube assembly has at least one laser-welded joint coupling the first and second U-shaped assembly components together. The laser-welded joint has a weld that extends along substantially an entire length of the tube assembly.
    Type: Application
    Filed: March 25, 2010
    Publication date: July 15, 2010
    Applicant: Caterpillar Inc.
    Inventors: Jiubo Ma, Zhishang Yang, Shizhu Zhao, Shoudu Zhang, Yuexuan Sheng, Lianmin Yang, Zengqiang Wang, Fuqiang Chen, Xinqiang Xu
  • Patent number: 7717069
    Abstract: The present disclosure provides an engine cooling system comprising a first cooling circuit and a second cooling circuit, each of which includes a cooling unit for cooling a compressed or charge air from one or more turbochargers of the engine.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: May 18, 2010
    Assignee: Caterpillar Inc.
    Inventors: Mahesh K. Mokire, Jiubo Ma
  • Publication number: 20090126657
    Abstract: The present disclosure provides an engine cooling system comprising a first cooling circuit and a second cooling circuit, each of which includes a cooling unit for cooling a compressed or charge air from one or more turbochargers of the engine.
    Type: Application
    Filed: November 15, 2007
    Publication date: May 21, 2009
    Inventors: Mahesh K. Mokire, Jiubo Ma
  • Publication number: 20080264622
    Abstract: A heat exchanger for a fluid handling system is disclosed. The heat exchanger may have an inlet configured to receive a fluid at a first temperature, and an outlet configured to discharge the fluid at a second temperature lower than the first. The heat exchanger may also have at least one fluid passageway disposed to conduct the fluid from the inlet to the outlet. The at least one fluid passageway may have a first section fabricated from a first material, and a second section fabricated from a dissimilar second material. At least one of the first and second materials may include a thermally conductive polymer.
    Type: Application
    Filed: April 30, 2007
    Publication date: October 30, 2008
    Inventors: Orhan Altin, Rishabh Sinha, Jiubo Ma, Kent Clark Bates
  • Publication number: 20070227141
    Abstract: An air intake system for a power source can include a first jacket water aftercooler, a second jacket water aftercooler, a compressor system, and an air intake for the power source. The first jacket water aftercooler and the second jacket water aftercooler can be located fluidly upstream from the air intake for the power source and fluidly downstream from the compressor system.
    Type: Application
    Filed: March 31, 2006
    Publication date: October 4, 2007
    Inventors: Jiubo Ma, Sen Hwee Lim, Nilkanth Dinesh Desai, Kent Clark Bates, Ajey Janardan Kulkarni, Ashok Nanjundan, James Carl Durand
  • Publication number: 20070227140
    Abstract: An air-to-air aftercooler may include at least one tube body configured to direct a flow of charged air, wherein the at least one tube body includes a first material. The air-to-air aftercooler may also include a header assembly coupled to ends of the at least one tube body. The header assembly may include a second different material.
    Type: Application
    Filed: March 31, 2006
    Publication date: October 4, 2007
    Inventors: Kent Bates, Jiubo Ma, Rishabh Sinha
  • Publication number: 20070227690
    Abstract: A gas to air heat exchanger includes corrosive resistant tubes made from one material, and high thermal conductivity air fins made from another material. This construction allows for meeting heat transfer requirements in a spatially constrained application, such as over the road trucks, where a compressed mixture of recirculated exhaust gas and incoming air are compressed and then cooled before being supplied to the engine intake. In one example, the heat exchanger includes tubes made from stainless steel brazed to relatively thin copper air fins in a low temperature brazing process, and the tubes are brazed on respective ends to heads of stainless steel via a high temperature brazing process. This core is then joined to an aluminum inlet tank and possible non-metallic outlet tank via a mechanical crimping process that positions a seal between the tanks and the respective heads.
    Type: Application
    Filed: September 27, 2005
    Publication date: October 4, 2007
    Inventors: Ajey Kulkarni, Ray Stratton, Jiubo Ma, Kent Bates
  • Publication number: 20070095503
    Abstract: A gas to air heat exchanger includes corrosive resistant tubes made from or internally coated with one material, and high thermal conductivity air fins made from another material. This construction allows for meeting heat transfer requirements in a spatially constrained application, such as over the road trucks, where a mixture of recirculated exhaust gas and incoming air are compressed, then cooled, before being supplied to the engine intake. In one example, the heat exchanger includes tubes made from stainless steel brazed to relatively thin copper air fins in a low temperature brazing process, and the tubes are brazed on respective ends to heads of stainless steel via a high temperature brazing process. This core is then joined to an aluminum inlet tank and possible non-metallic outlet tank via a mechanical crimping process that positions a seal between the tanks and the respective heads.
    Type: Application
    Filed: August 18, 2006
    Publication date: May 3, 2007
    Inventors: Rishabh Sinha, Nathan Rasmussen, Kyle Hummel, Jiubo Ma
  • Publication number: 20070044939
    Abstract: An air-to-air aftercooler may include a tube configured to direct a flow of charged air. The tube may include at least one first protrusion located on a first interior surface of the tube, and a first longitudinal plane may extend through the at least one first protrusion. The tube may also include at least one second protrusion located on a second interior surface of the tube, and a second longitudinal plane may extend through the at least one second protrusion. Furthermore, the first longitudinal plane and the second longitudinal plane may intersect.
    Type: Application
    Filed: August 30, 2005
    Publication date: March 1, 2007
    Inventors: Kyle Hummel, Jiubo Ma, Peitong Jin, Kristen Heins
  • Publication number: 20060275151
    Abstract: A pump includes an impeller with impeller blades that extend radially outward. The pump may further include a pump housing that may surround a radial perimeter of the impeller. Furthermore, the pump housing may include an inlet opening in fluid communication with the impeller and a discharge channel. The pump may further include a heat exchanger supported within the pump housing between the inlet opening and at least one connection port. of the pump housing. The heat exchanger may include one or more tubing coils that extend around an axis.
    Type: Application
    Filed: June 1, 2005
    Publication date: December 7, 2006
    Inventors: Kristen Heins, Jiubo Ma, Rohit Paramatmuni, Kent Bates
  • Publication number: 20060266793
    Abstract: The purging device has a supply of purge gas and a gas delivery system. The gas delivery system is configured to produce a directed flow of purge gas from the supply, toward a workpiece. The purging device also has a movement system configured to generate relative movement between the workpiece and the directed flow of purge gas.
    Type: Application
    Filed: May 24, 2005
    Publication date: November 30, 2006
    Inventors: Kent Bates, Gary Keil, Jiubo Ma
  • Patent number: 6789654
    Abstract: A multiple coupling fan drive provides power to a fan in a cooling system. An input shaft drives a constant viscous coupling and a variable viscous coupling, both of which are operative to drive the fan.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: September 14, 2004
    Assignee: Caterpillar Inc
    Inventor: Jiubo Ma
  • Publication number: 20040140172
    Abstract: A multiple coupling fan drive provides power to a fan in a cooling system. An input shaft drives a constant viscous coupling and a variable viscous coupling, both of which are operative to drive the fan.
    Type: Application
    Filed: January 22, 2003
    Publication date: July 22, 2004
    Inventor: Jiubo Ma
  • Patent number: 6318347
    Abstract: An air-to-air aftercooler or heat exchanger for a vehicular internal combustion engine, which is independent of the main vehicle heat exchanger or radiator, and which is located at a position upon the vehicle which is remote from the main vehicle heat exchanger or radiator, has a filter for filtering ambient air; at least one aftercooler heat exchanger, separate from the main radiator heat exchanger and disposed upon the engine at a location remote from the main radiator heat exchanger, and having a first passageway defined therein which is fluidically connected to the filter for receiving the ambient air which has passed through the filter; a second passageway defined within the at least one aftercooler heat exchanger for receiving turbocharged air from the turbocharger, for conducting the turbocharged air through the at least one aftercooler heat exchanger such that the turbocharged air undergoes a heat exchange process with the ambient air, and for conducting the turbocharged air to the engine intake manif
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: November 20, 2001
    Assignee: Caterpillar Inc.
    Inventors: Paul A. Dicke, Ronald L. Dupree, Donald C. Hodges, Jiubo Ma, Aubery W. Penn
  • Patent number: 6185939
    Abstract: Past exhaust emission control systems fail to utilize exhaust gas recirculation during all operating parameters of an engine. The present exhaust gas recirculation system reduces the emissions emitted from an engine during all operating parameters of the engine. The engine includes a cylinder, a rotatable crankshaft and a turbocharger defining a compressor section compressing a flow of intake air to a first preestablished pressure and being driven by a flow of exhaust gas having a first preestablished pressure. The exhaust gas recirculation system is comprised of a portion of the flow of exhaust gas being recirculated to the cylinder and forming a flow of recirculated exhaust gas. The flow of recirculated exhaust gas is cooled. A portion of the flow of intake air is compressed to a second preestablished pressure. The flow of recirculated exhaust gas is compressed to a second preestablished pressure being at least as great as the first preestablished pressure of the intake air.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: February 13, 2001
    Assignee: Caterpillar Inc.
    Inventors: Gerald N. Coleman, Michael J. Evancik, Dennis D. Feucht, Keith E. Lawrence, Jiubo Ma
  • Patent number: 6145480
    Abstract: An engine cooling system includes a primary two-pass radiator, a jacket water pump pumping coolant from the primary radiator to the engine, and a secondary radiator receiving coolant from the primary radiator in parallel with the engine. An after cooler for cooling engine charge air from a turbo charger receives coolant from the secondary radiator, and water is circulated to the after cooler by a SCAC pump. A shunt tank is connected to the suction of the jacket water pump to establish a static pressure head thereon, to ensure that the jacket water pump has sufficient suction pressure despite relatively high coolant head loss through the two-pass primary radiator.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: November 14, 2000
    Assignee: Caterpillar Inc.
    Inventors: Michael D. Betz, Jiubo Ma