Caterpillar Inc.

Ronald L Dupree

Michael D Betz

Michael D Ash

James John Callas

Kevin L Martin

Paul A Dicke

Jiubo Ma

Donald W Heston

Aubery W Penn

Brandon Dykstra

Donald C Hodges

Eugene E Zueck

John E Tuntland

Sean W Johnson

Jennifer Yanfang Wu

Roland E Weisman

Deepak Tiwari

An engine system includes an engine such as a compression ignition internal combustion engine, including a heat exchanger in an exhaust system thereof. The heat exchanger including at least one carbon foam block for cooling exhaust gas with cooling air. An exhaust system segment includes a carbon foam based heat exchanger configured to exchange heat between exhaust gas and cooling air at least in part via the carbon foam.

Engine system having carbon foam exhaust gas heat exchanger

A cooling system has an air-to-air or first heat exchanger and a fluid or second heat exchanger mounted remotely from a main radiator for cooling an internal combustion engine. A filter filters a recipient fluid, such as an ambient air, before the recipient fluid passes through the first heat exchanger and the second heat exchanger. A cooled fluid is conducted to a flow of intake air for the internal combustion engine. A fan causes the recipient fluid to pass through the filter and the first heat exchanger and the second heat exchanger. The spent recipient fluid is discharged to atmosphere.

Combined remote first intake air aftercooler and a second fluid from an engine cooler for an engine

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 manifold; and a fan for causing the ambient air to pass through the filter and the first passageway of the at least one remote aftercooler heat exchanger, and for causing the ambient air to be discharged to atmosphere.

Remote mounted air-to-air aftercooler

An engine cooling system includes a two-pass radiator, a jacket water pump pumping coolant from the radiator to the engine, and an aftercooler for cooling engine charge air from a turbocharger. An aftercooler pump pumps coolant from the radiator to the aftercooler. An orifice can be disposed in the aftercooler discharge line to limit flow therethrough, and an orifice bypass line with thermostatic control valve can be provided to selectively bypass the orifice. 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 radiator.

Turbocharged engine cooling system with two-pass radiator

Growing community of inventors

Washington, IL, United States of America

Ronald L Dupree