Caterpillar Inc.

Jeremy Byrd

Craig Phillip Hittle

Gregory Scott Hasler

Umakanth Sakaray

John M Tanner

Nirag Sheth

Adam C Grove

Eric Lee Schroeder

Aaron Conrad Luft

Aaron L Robinson

Catalin Tiru

David Andrew Pierpont

Arvind Sivasubramanian

Neil Alan Terry

Brian R Bell

Liangtao Zhu

Ryan Thomas Sunley

Bryce L Tiller

Prasad Chodavarapu

Rohan Swar

Kevin W Redinbo

Keith W Mellencamp

Lucian Stanciu

Deborah Lee Ribordy

Jared P Tolan

An energy storage device cooling system includes a housing, at least one energy storage device within the housing, and a coolant circuit including a first flow portion extending through the housing, the coolant circuit configured to supply coolant for heat exchange with the at least one energy storage device. The energy storage device cooling system also includes a chiller system including: a coolant supply, a heat exchanger, and an outlet in fluid communication with the first flow portion. The energy storage device cooling system also includes a controller configured to alter a function of the chiller system when a sensed temperature does not exceed a first temperature threshold.

Cooling system and method for energy storage

In one aspect, a pump-motor assembly is provided outside of and adjacent to a storage container that stores a back-up energy storage unit. The pump-motor assembly includes a pump-motor that maintains a minimum pressure of a liquid coolant in a liquid coolant system that cools the back-up energy storage unit, and a housing that is completely enclosed, the housing containing the pump-motor, and having a removable access panel on one side thereof the enclosed structure, and an opening on another side thereof to the storage container.

Pump-motor assembly for an energy storage system

In one aspect, a thermal management system includes a first coolant circuit, through which a first coolant circulates, and including at least a radiator for cooling the first coolant, a storage containing one or more power electronics, a heat exchanger, and a thermostatic valve that outputs the first coolant to at least one of the storage containing the one or more power electronics and the heat exchanger. A second coolant circuit, through which a second coolant circulates, includes the heat exchanger configured to cool the second coolant using the first coolant, an energy storage unit cooled by the second coolant, and a refrigeration unit configured to cool the second coolant. A coolant temperature sensor outputs a temperature of the coolant in the second coolant circuit, and a controller controls at least the refrigeration unit based on the temperature of the coolant output by the coolant temperature sensor.

Liquid cooled thermal management system and related method of controlling the liquid cooled thermal management system

A recirculation system for a power system is disclosed. The recirculation system may determine, according to a sequence for individually activating a plurality of turbochargers of an engine, that a designated turbocharger of the plurality of turbochargers is to be activated. The recirculation system may cause a recirculation valve of a recirculation line to open to increase an airflow between an intake manifold and a compressor of the designated turbocharger.

Recirculation system for a power system that includes a plurality of turbochargers

An internal combustion engine includes a cylinder case forming a plurality of coolant outlets, and an exhaust log structure disposed on the cylinder case and including inner and outer walls defining a coolant jacket therebetween, a plurality of coolant inlets extending through the outer wall and being fluidly connected to the coolant jacket, and a plurality of transfer housings. Each transfer housing includes an inner housing wall forming a gas passage, an outer housing wall disposed at an offset distance around the inner housing wall such that a cooling passage is defined in a space between the inner and outer housing walls, and a coolant inlet and a coolant outlet in fluid communication with the cooling passage. The plurality of coolant inlets is fluidly connected to the plurality of coolant outlets via the cooling passages in the plurality of transfer housings.

Heat shield system and method

An internal combustion engine having an exhaust log structure onto which a plurality of turbochargers is connected, each turbocharger having a turbine connected to the exhaust log structure and having an inlet fluidly connectable to a respective one of the plurality of outlet ports, an exhaust valve disposed at a turbine outlet such that the flow of exhaust gas out of the turbine is fluidly blocked, and an actuator associated with the exhaust valve and operating to move the exhaust valve from a closed position to an open position and vice versa. An electronic controller provides a command to the actuator to move the exhaust valve between the open and closed positions and is programmed to selectively open two one or more exhaust valves based on an operating condition of the engine.

Inline turbocharger arrangement and method

An internal combustion engine having a valve lifter assembly is disclosed. The internal combustion engine comprising an engine head having at least two wells adapted to receive at least one valve lifter, the at least one valve lifter includes a flat surface, at least one spacer installed within the engine head having a first surface, a hollow portion, and a second surface, the first surface is tapered with respect to a vertical axis of the at least one spacer, and a tie-bar plate for coupling the at least one spacer using head bolts. The at least one spacer and the at least one valve lifter are operatively arranged during operation in such a way that the flat surface of the at least one valve lifter faces the first surface of the at least one spacer to prevent rotation of the at least one valve lifter.

System and method for preventing rotation of valve lifter

An air exhaust mixer assembly includes an upstream intake section with an upstream elbow and a downstream elbow. A mixing tube is configured to introduce exhaust gas into the upstream intake section at a location upstream of the downstream elbow. An internal combustion engine utilizing the air exhaust mixer assembly is also provided.

Mixing system for engine with exhaust gas recirculation

An internal combustion engine includes a plurality of combustion cylinders, at least one turbocharger, an air supply line, an exhaust gas line and an exhaust gas recirculation system. An exhaust manifold of the exhaust gas line may have both non-direction specific and modular pulse exhaust manifold elements. If the internal combustion engine has dual cylinder banks, an exhaust gas balance tube may extend between exhaust gas lines of the cylinder banks and be fluidly connected to an exhaust manifold between the ends thereof.

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West Lafayette, IN, United States of America

Jeremy Byrd