Exhaust system having multiple dosers
AssigneeElectro-Motive Diesel, Inc.
InventorsAjay Patel, Pradeep K. Ganesan
Life of this patent
Estimating the term…
Abstract
An exhaust system for a machine is disclosed. The exhaust system may have a diffuser configured to receive exhaust from an engine. The exhaust system may further have a plurality of dosers associated with the diffuser and configured to inject fuel into the diffuser. The exhaust system may also have a controller configured to selectively control an amount of fuel injected by each of the plurality of dosers based on a velocity of the exhaust adjacent to each doser. In addition, the exhaust system may have an after-treatment component fluidly connected downstream of the diffuser and configured to heat the exhaust by oxidizing the injected fuel.
Claims20
An exhaust system, comprising:
- a diffuser configured to receive exhaust from an engine;
- a plurality of dosers associated with the diffuser and configured to inject fuel into the diffuser;
- a plenum fluidly connected downstream of the diffuser;
- a controller configured to determine a temperature of exhaust in the plenum and selectively control an amount of fuel injected by each of the plurality of dosers based on the determined temperature and a velocity of the exhaust adjacent to each doser;
- and
- an aftertreatment component fluidly connected downstream of the plenum and configured to heat the exhaust by oxidizing the injected fuel.
A method of heating exhaust, the method comprising:
- directing exhaust from an engine into a diffuser;
- injecting fuel into the diffuser using a plurality of dosers;
- directing the exhaust from the diffuser into a plenum;
- determining a temperature of exhaust in the plenum;
- selectively controlling, via a controller, an amount of fuel injected by each of the plurality of dosers based on the determined temperature and a velocity of the exhausted adjacent to each doser;
- and
- heating the exhaust by oxidizing the injected fuel in an after-treatment component connected downstream of the plenum.
A machine, comprising:
- an engine having a plurality of cylinders;
- a diffuser configured to receive exhaust from the plurality of cylinders;
- a plurality of dosers configured to inject fuel into the diffuser;
- a plenum fluidly connected downstream of the diffuser;
- a temperature sensor configured to determine a temperature of exhaust in the plenum;
- a controller configured to selectively control an amount of fuel injected by each of the plurality of dosers based on the determined temperature and a velocity of exhaust adjacent to each closer;
- and
- an after-treatment component fluidly connected downstream of the diffuser and configured to heat the exhaust by oxidizing the injected fuel.
Dependencies are inferred from the claim text.