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US 7,741,127 B2Granted
Method for producing diesel exhaust with particulate material for testing diesel engine aftertreatment devices
AssigneeSouthwest Research Institute
InventorsGordon James Johnston Bartley, Cynthia Chaffin Webb, Imad Abdul-Khalek
Life of this patent
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Abstract
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.
Claims15
A method of using a burner-based system to generate exhaust gas containing particulate matter (PM) that simulates PM produced by a diesel powered internal combustion engine, comprising:
- using a burner to receive air and fuel and to combust the air and fuel to produce the exhaust gas and nascent PM in the exhaust gas;
- using a heat exchanger to cool the exhaust gas downstream of the burner to a temperature not greater than 650 degrees Centigrade;
- using an oxygen injector to inject a pre-determined amount of oxygen into the exhaust, thereby providing the exhaust gas with an oxygen content of 2-10 percent by volume;
- using a quencher downstream the oxygen injector, to cool the exhaust to a temperature sufficiently low to lock the composition of the PM;
- and using a computerized control system to control the amount and timing of fuel and oxygen supplied to the burner and oxygen injector.
2 more elements
A method of using a burner-based system to test an emissions control device that treats exhaust gas containing particulate matter (PM), comprising:
- using a burner to receive air and fuel and to combust the air and fuel to produce the exhaust gas and nascent PM in the exhaust gas;
- using a heat exchanger to cool the exhaust gas downstream of the burner to a temperature not greater than 650 degrees Centigrade;
- using an oxygen injector to inject a pre-determined amount of oxygen into the exhaust, thereby providing the exhaust gas with an oxygen content of 2-10 percent by volume;
- using a quencher downstream the oil injector and the oxygen injector, to cool the exhaust to a temperature sufficiently low to lock the PM composition;
- delivering the exhaust gas to the emissions control device;
- and using a computerized control system to control the amount and timing of fuel and oxygen supplied to the burner and oxygen injector.
3 more elements
Dependencies are inferred from the claim text.