Secondary Air Injector For Use With Exhaust Gas Simulation System
OwnerSuzanne Timmons, Cynthia Webbinventors
Life of this patent
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Abstract
A secondary air injector 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. The secondary air injector is placed downstream the burner to create a desired thermal condition or composition of the exhaust gas. The injector comprises a hollow ring fitted around the exhaust line, with multiple holes for evenly injecting the air into the exhaust line.
Claims14
A secondary gas injector for an exhaust gas simulation system, the exhaust gas simulation system having an exhaust line downstream a combustive burner, comprising:
- a hollow ring around the exhaust line, the ring having an outer wall and an inner wall;
- at least one inlet in the outer wall for receiving a gas into the ring;
- wherein the inner wall is perforated with multiple ports for injecting the gas into the exhaust line.
A method of simulating exhaust flow from an internal combustion engine, comprising:
- combusting fuel using a burner;
- exhausting the exhaust from the combusting step through an exhaust line;
- and
- injecting a gas into the exhaust line downstream the burner;
- wherein the injecting step is performed using a hollow air injection ring around the exhaust line, the ring having ports in its inner wall for injecting the gas into the exhaust line
A method of testing an emissions control device using an exhaust flow simulator, comprising:
- combusting fuel using a burner;
- exhausting the exhaust from the combusting step through an exhaust line;
- and
- injecting secondary air into the exhaust line downstream the burner;
- wherein the injecting step is performed with a secondary air injector comprising a ring placed around the exhaust line downstream the burner;
- and
- placing the emissions control device downstream the secondary air injector.
A burner-based system for generating exhaust gas that simulates exhaust gas produced by an internal combustion engine, comprising:
- a burner system having at least a burner for receiving air and fuel and for combusting the fuel to produce simulated engine exhaust;
- an exhaust line for carrying the exhaust from the burner;
- a secondary air injector downstream the burner installed as a ring around the exhaust line and having at least one inlet port for receiving a gas and a plurality of outlet ports for injecting the gas into the exhaust line;
- and
- a computerized control system operable to control the burner to simulate one or more engine cycles.
Dependencies are inferred from the claim text.