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US 2013/0153680 A1Published application
Fluid injector having heater
AssigneeCaterpillar Inc.
InventorsSridhar Thangaswamy, Thomas R. McClure
Life of this patent
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Abstract
A fluid injector unit for use in an exhaust treatment system includes; a fluid injector having a fluid receiving end and a fluid injecting end, a heater disposed about the fluid injecting end of the fluid injector, and an electrical contact member electrically connected to the heater, wherein the electrical contact member includes; an electrical contact pin electrically coupled to the heater, and a ceramic end seal axially surrounding the electrical contact pin.
Claims21
A fluid injector unit for use in an exhaust treatment system, comprising:
- a fluid injector having a fluid receiving end and a fluid injecting end;
- a heater disposed about the fluid injecting end of the fluid injector;
- and
- an electrical contact member electrically connected to the heater, wherein the electrical contact member includes:
- an electrical contact pin electrically coupled to the heater;
- and
- a ceramic end seal axially surrounding the electrical contact pin.
4 more elements
A regeneration system comprising:
- a housing;
- and
- a fluid injector unit disposed in the housing, the fluid injector unit including:
- a fluid injector having a fluid receiving end and a fluid injecting end;
- a heater disposed about the fluid injecting end of the fluid injector;
- and
- an electrical contact member electrically connected to the heater, wherein the electrical contact member includes:
- an electrical contact pin electrically coupled to the heater;
- and
- a ceramic end seal disposed axially surrounding the electrical contact pin.
7 more elements
A regeneration system comprising:
- a housing;
- and
- a fluid injector unit disposed in the housing, the fluid injector unit including:
- a fluid injector having a fluid receiving end and a fluid injecting end;
- a heater disposed about the fluid injecting end of the fluid injector;
- an electrical contact member electrically connected to the heater, wherein the electrical contact member includes:
- an electrical contact pin electrically coupled to the heater;
- and
- a ceramic end seal disposed axially surrounding the electrical contact pin;
- an elastomeric sealing member disposed between the electrical contact member and the housing, the elastomeric sealing member having an inner diameter which varies as a function of restoring forces and expanding forces applied thereto;
- and
- an end cap substantially surrounding the electrical contact pin,
- wherein the end cap is tapered such that a first end of the end cap has a first diameter corresponding to a minimum inner diameter of the elastomeric sealing member and such that a second end of the end cap has a second diameter greater than the first diameter.
10 more elements
Dependencies are inferred from the claim text.