Patents by Inventor Allen Y. Chen
Allen Y. Chen 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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Publication number: 20230279801Abstract: An internal combustion engine system including a cylinder block, a cylinder head attached to the cylinder block, an EGR cooler, and a coolant collector bracket is provided. The cylinder head includes a plurality of coolant passages. The coolant collector bracket is coupled to and between the cylinder head and the EGR cooler. The coolant collector bracket includes a plurality of coolant inlets directly coupled to a plurality of outlets of the plurality of coolant passages of the cylinder head. The coolant collector bracket also includes an EGR coolant outlet directly coupled to an inlet of the EGR cooler. The coolant collector bracket also includes an EGR cooler inlet directly coupled to an outlet of the EGR cooler.Type: ApplicationFiled: May 12, 2023Publication date: September 7, 2023Applicant: Caterpillar Inc.Inventors: Dean W. WALTERS, Allen Y. CHEN, DeForest C. GOULD, III, Jason L. VAN FAROWE, Quinton M. BURCAR
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Patent number: 11608800Abstract: A coolant collector bracket including a front side, a back side, and a top side is provided. The back side is opposite the front side and includes a plurality of coolant inlets for receiving coolant from a cylinder head. The top side includes an exhaust gas recirculation (EGR) cooler inlet and an EGR coolant outlet. The EGR coolant inlet and the EGR coolant outlet are substantially orthogonal to the plurality of coolant inlets.Type: GrantFiled: December 11, 2020Date of Patent: March 21, 2023Assignee: Caterpillar Inc.Inventors: Dean W. Walters, Allen Y. Chen, DeForest C. Gould, III, Jason L. Van Farowe, Quinton M. Burcar
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Publication number: 20220389856Abstract: An internal combustion engine system including a cylinder block, a cylinder head attached to the cylinder block, an EGR cooler, and a coolant collector bracket is provided. The cylinder head includes a plurality of coolant passages. The coolant collector bracket is coupled to and between the cylinder head and the EGR cooler. The coolant collector bracket includes a plurality of coolant inlets directly coupled to a plurality of outlets of the plurality of coolant passages of the cylinder head. The coolant collector bracket also includes an EGR coolant outlet directly coupled to an inlet of the EGR cooler. The coolant collector bracket also includes an EGR cooler inlet directly coupled to an outlet of the EGR cooler.Type: ApplicationFiled: August 19, 2022Publication date: December 8, 2022Applicant: Caterpillar Inc.Inventors: Dean W. WALTERS, Allen Y. CHEN, DeForest C. GOULD, III, Jason L. VAN FAROWE, Quinton M. BURCAR
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Patent number: 11493002Abstract: An exhaust gas recirculation (EGR) cooler for mounting to a coolant collector bracket may include a cooler body having a top, a bottom, a length extending in a longitudinal direction, and a width extending in a lateral direction perpendicular to the longitudinal direction, and at least one mount coupled to the bottom of the cooler body. An interior of the mount may be in fluid communication with an interior of the cooler body. A width of the at least one mount in the lateral direction of the cooler body may be equal to or less than the width of the cooler body. The at least one mount may be positioned such that the mount does not extend beyond the width of the cooler body.Type: GrantFiled: November 3, 2021Date of Patent: November 8, 2022Assignee: Caterpillar Inc.Inventors: Allen Y. Chen, Dean W. Walters, Jason L. Van Farowe, DeForest C. Gould
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Patent number: 11492953Abstract: Apparatuses and methods are disclosed including heat exchanger for an internal combustion engine. The heat exchanger can include a main body, a manifold and one or more outlet ports. The main body can have an inlet and an outlet to receive/pass a coolant on a first side thereof. The main body can have a fluid inlet and fluid outlet configured to receive a fluid. The main body can pass the fluid in a heat exchange relationship with the coolant. The manifold can be coupled to the main body on a second side. The manifold can be in fluid communication with a main coolant outlet passage to receive a portion of the coolant from the main body. The one or more outlet ports can be fluidly connected to the manifold and passing the portion of the coolant to one or more engine auxiliary systems.Type: GrantFiled: November 9, 2021Date of Patent: November 8, 2022Assignee: Caterpillar Inc.Inventors: Allen Y. Chen, Jason L. Van Farowe, Scott R. Schuricht, Kyle V Zeitler
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Patent number: 11454157Abstract: An internal combustion engine system including a cylinder block, a cylinder head attached to the cylinder block, an EGR cooler, and a coolant collector bracket is provided. The cylinder head includes a plurality of coolant passages. The coolant collector bracket is coupled to and between the cylinder head and the EGR cooler. The coolant collector bracket includes a plurality of coolant inlets directly coupled to a plurality of outlets of the plurality of coolant passages of the cylinder head. The coolant collector bracket also includes an EGR coolant outlet directly coupled to an inlet of the EGR cooler. The coolant collector bracket also includes an EGR cooler inlet directly coupled to an outlet of the EGR cooler.Type: GrantFiled: December 11, 2020Date of Patent: September 27, 2022Assignee: Caterpillar Inc.Inventors: Dean W. Walters, Allen Y. Chen, Deforest C. Gould, III, Jason L. Van Farowe, Quinton M. Burcar
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Publication number: 20220186653Abstract: An internal combustion engine system including a cylinder block, a cylinder head attached to the cylinder block, an EGR cooler, and a coolant collector bracket is provided. The cylinder head includes a plurality of coolant passages. The coolant collector bracket is coupled to and between the cylinder head and the EGR cooler. The coolant collector bracket includes a plurality of coolant inlets directly coupled to a plurality of outlets of the plurality of coolant passages of the cylinder head. The coolant collector bracket also includes an EGR coolant outlet directly coupled to an inlet of the EGR cooler. The coolant collector bracket also includes an EGR cooler inlet directly coupled to an outlet of the EGR cooler.Type: ApplicationFiled: December 11, 2020Publication date: June 16, 2022Applicant: Caterpillar Inc.Inventors: Dean W. WALTERS, Allen Y. CHEN, DeForest C. GOULD, III, Jason L. VAN FAROWE, Quinton M. BURCAR
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Publication number: 20220186662Abstract: A coolant collector bracket including a front side, a back side, and a top side is provided. The back side is opposite the front side and includes a plurality of coolant inlets for receiving coolant from a cylinder head. The top side includes an exhaust gas recirculation (EGR) cooler inlet and an EGR coolant outlet. The EGR coolant inlet and the EGR coolant outlet are substantially orthogonal to the plurality of coolant inlets.Type: ApplicationFiled: December 11, 2020Publication date: June 16, 2022Applicant: Caterpillar Inc.Inventors: Dean W. WALTERS, Allen Y. CHEN, DeForest C. GOULD, III, Jason L. VAN FAROWE, Quinton M. BURCAR
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Patent number: 11149624Abstract: An internal combustion engine system including a cylinder block, a cylinder head attached to the cylinder block, an EGR cooler, and a coolant collector bracket configured to vertically support the EGR cooler is provided. The cylinder head includes a lateral surface including a plurality of fasteners positioned along a bottom edge of the lateral surface. The cylinder head also includes a plurality of coolant passages. The coolant collector bracket is horizontally coupled to the cylinder head and perpendicularly coupled to the EGR cooler. The coolant collector bracket includes a plurality of mounting legs directly coupled to the lateral surface of the cylinder head. The plurality of mounting legs include a plurality of slots. The plurality of mounting legs are slidably inserted onto the plurality of fasteners of the cylinder head via the plurality of slots.Type: GrantFiled: December 11, 2020Date of Patent: October 19, 2021Assignee: Caterpillar Inc.Inventors: Dean W. Walters, Allen Y. Chen, DeForest C. Gould, III, Jason L. Van Farowe, Quinton M. Burcar
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Publication number: 20120139547Abstract: Example embodiments of the systems and methods of cell imbalance detection disclosed herein may prevent any cell of a multi-cell battery pack from exceeding over voltage conditions of the battery. In an example embodiment, automatic cell imbalance detection may be performed using two cells in series. The example embodiment determines the relative cell voltages. If a difference between the two cells of more than a certain threshold is detected, a cell balancing circuit may be activated to discharge the cell with the higher voltage. Example embodiments use no microprocessor, nor an ADC. An advantage of this approach over previous solutions is the relative knowledge of the cell voltages.Type: ApplicationFiled: December 6, 2010Publication date: June 7, 2012Applicant: Texas Instruments IncorporatedInventors: Allen Y. Chen, Richard Nicholson
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Patent number: 5047672Abstract: A circuit (90) converts a true ECL signal to a true TTL signal. The circuit includes a differential circuit (180) that receives an ECL signal having high and low values. The differential circuit produces a differential signal therefrom that has a high value in response to one of the high and low values of the true ECL signal, and a low value in response to the other of the high and low values of the true ECL signal. A first translator circuit (36, 64) has an input (32) coupled to the differential circuit (180). The first translator circuit (36, 64) transmits a true low TTL output (56) signal having a voltage level referenced to the voltage level of a TTL low supply voltage in response to receiving a high value of the differential signal. A second translator circuit (46, 52) has an input (38) and is coupled to a TTL high supply voltage and the output (56).Type: GrantFiled: March 31, 1989Date of Patent: September 10, 1991Assignee: Texas Instruments IncorporatedInventors: Rohit L. Bhuva, Walter C. Bonneau, Jr., Robert L. Gruebel, Robert A. Helmick, Allen Y. Chen
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Patent number: 4727514Abstract: A programmable memory includes a memory matrix (34) with a row decode circuit (36) and a column decode circuit (48) operable in the program mode to select one of the memory elements in the memory matrix (34). A current boost circuit (50) is operable to provide increased current to the selected cell such that selection of the cell opens the fuse associated therewith to change the logic state. The pins associated with the column and row addresses have multiple mode functions such that in the normal operating mode they can be assigned other tasks and in the programming mode are utilized primarily for addressing of the memory cells.Type: GrantFiled: February 11, 1986Date of Patent: February 23, 1988Assignee: Texas Instruments IncorporatedInventors: Rohit L. Bhuva, Allen Y. Chen