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公开(公告)号：US10895224B1
公开(公告)日：2021-01-19
申请号：US16458886
申请日：2019-07-01
Applicant: Caterpillar Inc.
Inventor： Jaswinder Singh , Michael Bardell , David Ginter , Paul Wang , Patrick Seiler
Abstract: An exhaust system for an internal combustion engine includes an EGR cooler having a heat exchange surface exposed to a flow of exhaust, and a second heat exchange surface. A coolant heat exchanger is fluidly connected to a coolant outlet of the EGR cooler and a coolant pump is fluidly connected to a coolant inlet of the EGR cooler. A condensate collector collects condensate from exhaust, and a condensate pump pumps condensate from the condensate collector to a sprayer to spray condensate onto the second heat exchange surface to vaporize the condensate for discharging out through an outgoing exhaust conduit of the exhaust system.
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公开(公告)号：US20210087981A1
公开(公告)日：2021-03-25
申请号：US16580850
申请日：2019-09-24
Applicant: Caterpillar Inc.
Inventor： Paul Wang , Robert J. Maxson , David M. Ginter , Michael Bardell
Abstract: A controller for an internal combustion engine of a generator set operates the engine at a first, low load condition at a lean air/fuel ratio using hydrogen fuel, and at a second, high load condition at a richer air/fuel ratio using gaseous fuel. The controller transitions from the first condition to the second condition by adding gaseous fuel to achieve the richer air/fuel ratio during a transient event.
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公开(公告)号：US20210040922A1
公开(公告)日：2021-02-11
申请号：US16531463
申请日：2019-08-05
Applicant: Caterpillar Inc.
Inventor： Ronald Silver , Jaswinder Singh , David M. Ginter , Paul Wang , Michael Bardell
Abstract: The present disclosure relates to exhaust treatment systems and engine systems. In one implementation, an engine system comprises an engine comprising an intake manifold and an exhaust manifold, the engine configured to combust a fuel-air mixture received via the intake manifold and produce a flow of exhaust gases via the exhaust manifold. The engine system also comprises a turbocharger comprising a turbine, an exhaust passageway fluidly connecting the exhaust manifold of the engine to the turbine and an intake passageway fluidly connected to the intake manifold of the engine for supplying the fuel-air mixture, a catalyzed member positioned along the exhaust passageway between the engine and the turbine, and an exhaust gas recirculation (EGR) loop fluidly connected downstream of the catalyzed member and fluidly connected to the exhaust passageway and the intake passageway.
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Patent Agency Ranking
公开(公告)号：US20210003103A1
公开(公告)日：2021-01-07
申请号：US16458886
申请日：2019-07-01
Applicant: Caterpillar Inc.
Inventor： Jaswinder Singh , Michael Bardell , David Ginter , Paul Wang , Patrick Seiler
Abstract: An exhaust system for an internal combustion engine includes an EGR cooler having a heat exchange surface exposed to a flow of exhaust, and a second heat exchange surface. A coolant heat exchanger is fluidly connected to a coolant outlet of the EGR cooler and a coolant pump is fluidly connected to a coolant inlet of the EGR cooler. A condensate collector collects condensate from exhaust, and a condensate pump pumps condensate from the condensate collector to a sprayer to spray condensate onto the second heat exchange surface to vaporize the condensate for discharging out through an outgoing exhaust conduit of the exhaust system.
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公开(公告)号：US20190024571A1
公开(公告)日：2019-01-24
申请号：US15656944
申请日：2017-07-21
Applicant: Caterpillar Inc.
Inventor： Paul Wang , David Ginter , Jaswinder Singh , Arnold Kim
CPC classification number: F02B19/1085 , F02B19/12 , F02D41/0025 , F02D41/1452 , F02D41/1454 , F02D41/30 , F02D2200/0611
Abstract: A system for controlling enriched prechamber stoichiometry includes a prechamber ignition device, and an ignition control system that includes a sensor structured to measure an amount of at least one of CO2 or O2 in a prechamber, an engine timing sensor, a fuel quality sensor, and an electronic control unit. The electronic control unit is structured to receive signals from each of the sensors and determine an air-fuel ratio of the prechamber for comparison with a target air-fuel ratio, and produce a fuel delivery signal based on the comparison.
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公开(公告)号：US11261830B2
公开(公告)日：2022-03-01
申请号：US16531463
申请日：2019-08-05
Applicant: Caterpillar Inc.
Inventor： Ronald Silver , Jaswinder Singh , David M. Ginter , Paul Wang , Michael Bardell
Abstract: The present disclosure relates to exhaust treatment systems and engine systems. In one implementation, an engine system comprises an engine comprising an intake manifold and an exhaust manifold, the engine configured to combust a fuel-air mixture received via the intake manifold and produce a flow of exhaust gases via the exhaust manifold. The engine system also comprises a turbocharger comprising a turbine, an exhaust passageway fluidly connecting the exhaust manifold of the engine to the turbine and an intake passageway fluidly connected to the intake manifold of the engine for supplying the fuel-air mixture, a catalyzed member positioned along the exhaust passageway between the engine and the turbine, and an exhaust gas recirculation (EGR) loop fluidly connected downstream of the catalyzed member and fluidly connected to the exhaust passageway and the intake passageway.
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公开(公告)号：US11174800B2
公开(公告)日：2021-11-16
申请号：US16580850
申请日：2019-09-24
Applicant: Caterpillar Inc.
Inventor： Paul Wang , Robert J. Maxson , David M. Ginter , Michael Bardell
Abstract: A controller for an internal combustion engine of a generator set operates the engine at a first, low load condition at a lean air/fuel ratio using hydrogen fuel, and at a second, high load condition at a richer air/fuel ratio using gaseous fuel. The controller transitions from the first condition to the second condition by adding gaseous fuel to achieve the richer air/fuel ratio during a transient event.
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公开(公告)号：US10458312B2
公开(公告)日：2019-10-29
申请号：US15656944
申请日：2017-07-21
Applicant: Caterpillar Inc.
Inventor： Paul Wang , David Ginter , Jaswinder Singh , Arnold Kim
Abstract: A system for controlling enriched prechamber stoichiometry includes a prechamber ignition device, and an ignition control system that includes a sensor structured to measure an amount of at least one of CO2 or O2 in a prechamber, an engine timing sensor, a fuel quality sensor, and an electronic control unit. The electronic control unit is structured to receive signals from each of the sensors and determine an air-fuel ratio of the prechamber for comparison with a target air-fuel ratio, and produce a fuel delivery signal based on the comparison.
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