Southwest Research Institute

Cynthia Chaffin Webb

Gordon J Bartley

Bruce Bruno Bykowski

Magdi K Khair

Christopher Alan Sharp

Gordon James Johnston Bartley

Melvin Nathaniel Ingalls, Jr

Cary A Henry

Robert Wayne Burrahm

Scott T Eakle

Andy Morris Anderson

Jeffrey A Mathis

Yiqun Huang

Imad Said Abdul-Khalek

Phillip Anthony Weber

Thomas R Gabehart

John W Miller

Michael Glenn Ross

Suzanne Annette Timmons

Jason T Miwa

Ernest Melvin Krueger

Martin John Heimrich

Karl J Kreder, Iii

Brent A Shoffner

Terry L Ullman

Gordon James Johnston

Technologies for producing an exhaust gas stream with controlled hydrocarbon species are disclosed. In some embodiments the technologies include an apparatus for producing an exhaust gas stream. The apparatus may include a burner for combusting primary fuel and produce an exhaust gas stream, and an exhaust pipe coupled to the burner to receive the exhaust gas stream. One or more supplemental fuel inlets may be coupled to the exhaust gas pipe for the addition of supplemental fuel to the exhaust gas stream. In embodiments, the speciation and total concentration of hydrocarbon compounds in the exhaust gas stream may be adjusted by controlling the relative amount of supplemental fuel added to the exhaust gas stream. Methods for producing an exhaust gas stream are also disclosed.

Technologies for producing exhaust gas with controlled hydrocarbon speciation

A method and system for raising the operating temperature of an emissions control device of an automotive vehicle. A generator converts the vehicle's mechanical braking energy to electrical energy. The electrical energy is delivered, without electrical storage, to an electric heater that heats either the emissions control device or the exhaust gas at the input to the device.

Use of Braking energy to augment exhaust heat for improved operation of exhaust aftertreatment devices

A particulate matter generator implemented as a 'mini-burner', and used in conjunction with a larger test system for the specific purpose of enhancing the particulate matter content of exhaust gas. The exhaust stream of the larger system is supplemented with exhaust from the mini-burner to produce exhaust with desired particulate matter characteristics. The exhaust gas may then be used for various test purposes, such as testing emissions control devices.

Particulate matter generator for use with an emissions control device aging system

A burner-based exhaust gas generation system, having a blower for providing air into the system. The blower is controlled to compensate for variations in mass air flow into the system.

Mass air flow compensation for burner-based exhaust gas generation system

A burner-based exhaust gas generation system, for producing exhaust gas, typically for use in testing exhaust system devices. Post-burner exhaust gas is recirculated back to a main exhaust line, and used for purposes such as cooling or enhancing the burner output.

Use of recirculated exhaust gas in a burner-based exhaust generation system for reduced fuel consumption and for cooling

A method of using a burner-based system to produce diesel exhaust gas that contains particulate matter of a desired composition, to simulate the PM matter in exhaust produced by a production-type diesel internal combustion engine.

Method for producing diesel exhaust with particulate material for testing diesel engine aftertreatment devices

The present application relates in general to an apparatus and to methods for testing the performance of an automotive catalytic converter under conditions simulating those which occur in motor vehicles over extended driving conditions. The application provides a novel swirl plate and a novel fuel injector which enable the burner to run stoichiometric for extended periods of time.

Method and apparatus for testing catalytic converter durability

A temperature control system and method for use with an exhaust flow simulation system. A typical exhaust flow simulator is a burner-based system, in which exhaust from a combustive burner is exhausted through an exhaust line. A temperature control section divides the exhaust from the burner line into two paths: a cool path and an uncooled (hot) path. The cool path uses a heat exchanger to cool the exhaust. The cool path also has a control valve that controls the relative portions of hot and cool exhaust, which are re-mixed downstream the valve into an exhaust line. Various embodiments have different configurations for the two paths.

Exhaust gas simulation system with dual path temperature control for control of exhaust temperature

Various methods and systems for augmenting the amount of NOin the exhaust of an exhaust flow simulation system. These methods and system can be 'combustion' or 'post combustion'. A combustion embodiment injects a nitrogen-containing compound (doping agent) into the burner, so that it mixed and combusted with the fuel.

[object Object]

A burner-based system for producing exhaust that simulates the exhaust produced by a production type internal combustion engine. The system is computer controlled so that parameters such as the composition of the exhaust, its rate of flow, and its temperature can be specified. This permits various engine operating conditions to be simulated. An emissions control device can be installed to receive the exhaust, and to thereby undergo rigorous testing. Various tests for durability can be performed.

Component evaluations using non-engine based test system

A method for accelerated aging of an automotive catalytic converter under conditions incorporating cold start simulations.

System and method for burner-based accelerated aging of emissions control device, with engine cycle having cold start and warm up modes

A method for simulating at least one drive cycle of a vehicle using a non-engine based test system, the method including providing a non-engine based test system including a combustor in fluid communication with a catalytic converter from the vehicle; supplying fuel and air to said combustor at an air to fuel ratio (AFR) and under conditions effective to produce a feedstream flowpath; substantially stoichiometrically combusting at least a portion of the fuel in the feedstream flowpath under conditions effective to simulate at least one drive cycle of the vehicle and to produce a simulated drive cycle exhaust product for the vehicle, the conditions being effective to prevent substantial damage to the combustor; and, collecting and analyzing the simulated drive cycle exhaust product.

Method for drive cycle simulation using non-engine based test system

The present application relates in general to methods for testing the performance of an automotive catalytic converter under conditions simulating those which occur in motor vehicles over extended driving conditions.

Method for testing catalytic converter durability

A method for testing one or more test components including providing a non-engine based test system including a combustor in fluid communication with the one or more test components; supplying air and fuel to the combustor at an air to fuel ratio (AFR) and under feed conditions effective to produce a feedstream flowpath, wherein the fuel includes one or more alternative fuel which is gaseous at ambient conditions including atmospheric pressure and a temperature of about 20&#xb0; C. or higher, the supplying air and fuel including feeding the one or more alternative fuel to a pressure regulator to produce one or more pressure regulated alternative fuel and feeding the one or more pressure regulated alternative fuel to the combustor; combusting at least a portion of fuel in the feedstream flowpath under combustion conditions effective to produce an exhaust product including one or more alternative fuel exhaust; and, exposing the one or more test components to the exhaust product under test conditions effective to produce one or more treated components.

Growing community of inventors

San Antonio, TX, United States of America

Cynthia Chaffin Webb