PM generating apparatus
AssigneeNGK Insulators, Ltd.
InventorsToshihiko Hijikata, Satoru Yamada, Yukio Miyairi
Life of this patent
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Abstract
A means capable of supplying exhaust gas sufficiently imitating exhaust gas from actual diesel engines is provided. A PM generating apparatus has a constitution in which combustion air supplied to the space between a chassis and an outer casing via an air inlet is introduced into the space between the outer casing and an inner casing via through-holes of the outer casing, and a fuel injected by an fuel-injection means into the space between the chassis and the outer casing is introduced into the space between the outer casing and the inner casing via the through-holes of the outer casing, wherein the fuel is combusted to generate PM.
Claims28
An apparatus for generating PM (particulate matter) in a gas by mixing a liquid and/or gaseous fuel with combustion air and incompletely burning the mixture, comprising:
- a combustion chamber in which fuels are mixed with combustion air and combusted,
- a fuel-injection means to inject the fuel to the combustion chamber, and
- a pilot burner which ignites the air-fuel mixture;
- the combustion chamber comprising a chassis equipped with an air inlet for supplying combustion air, a gas outlet for discharging the gas in which PM was generated, and a flame entrance leading to the pilot burner, an outer casing incorporated in the chassis, while forming a space between itself and the chassis, and an inner casing incorporated in the outer casing so as to be directly connected to the flame entrance, while forming a space between itself and the outer casing;
- the outer casing and inner casing being provided with through-holes around the circumference thereof so that the fuel injected by the fuel-injection means into the space between the chassis and the outer casing and the combustion air supplied to the space between the chassis and the outer casing from the air inlet are introduced into the space between the outer casing and the inner casing through the through-holes of the outer casing and mixed there.
An apparatus for generating PM (particulate matter) in a gas by mixing a liquid and/or gaseous fuel with combustion air and incompletely burning the mixture, comprising:
- a combustion chamber in which fuels are mixed with combustion air and combusted,
- a fuel-injection means to inject the fuel to the combustion chamber, and
- a pilot burner which ignites the air-fuel mixture;
- the combustion chamber comprising a chassis equipped with an air inlet for supplying combustion air, a gas outlet for discharging the gas in which PM was generated, and a flame entrance leading to the pilot burner, an outer casing incorporated in the chassis, while forming a space between itself and the chassis, and an inner casing incorporated in the outer casing so as to be directly connected to the flame entrance, while forming a space between itself and the outer casing;
- the outer casing and inner casing being provided with through-holes around the circumference thereof so that the fuel injected by the fuel-injection means into the space between the chassis and the outer casing and the combustion air supplied to the space between the chassis and the outer casing from the air inlet are introduced into the space between the outer casing and the inner casing through the through-holes of the outer casing and mixed there,
- wherein the chassis has a cylindrical area and each of the outer casing and the inner casing has a shape of a cylinder, the cylindrical outer casing being incorporated in the cylindrical area of the chassis so that the cylindrical outer casing becomes coaxial with the cylindrical area of the chassis, and the cylindrical inner casing being incorporated in the cylindrical outer casing so that its axis has the same direction as, but is eccentric to the central axis direction of the cylindrical outer casing,
- wherein, in the case in which axes of coordinates consisting of an X-axis and a Y-axis crossing at the central axis of the cylindrical area of the chassis at right angles to each other are set on a cross-section perpendicular to the central axis direction of the cylindrical area of the chassis (provided that the absolute direction of the X-axis and Y-axis are not limited so long as the X-axis and Y-axis mutually maintain a right angle on a cross-section perpendicular to the central axis direction), the PM generating apparatus provided with the fuel-injection means in the chassis in such a manner that the fuel injection direction is parallel to the X-axis at a position of Y=+60 to +80, when the wall of the cylindrical area of the chassis is located at Y=+100, and
- wherein the angle formed by at least one of the two or more through-holes provided around the circumference of the outer casing, the origin of the axes of coordinates, and the fuel-injection means is 10 to 40°.
Dependencies are inferred from the claim text.