US 2019/0353136 A1Published application

Igniter assembly with improved insulation and method of insulating the igniter assembly

AssigneeTenneco Inc.

InventorsKRISTAPHER I. MIXELL, YUSUF ESMAIL NEEMUCHWALA, JOHN E. MILLER, JAMES D. LYKOWSKI, JOHN ANTONY BURROWS

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Abstract

An igniter assembly comprising an ignition coil assembly connected to a firing end assembly by an extension, with a valve assembly disposed in a pressure chamber of the extension, is provided. The valve assembly includes a valve stem biased toward the ignition coil assembly by a spring to seal the pressure chamber. The valve assembly is used to evacuate contents from the pressure chamber by pressing the valve stem toward the spring and allowing contents of the pressure chamber to travel through and past the valve stem and out of the pressure chamber. The valve assembly is also used to fill the pressure chamber with an insulating medium by pressing the valve stem toward the spring and allowing the insulating medium to travel through and past the valve stem and into the pressure chamber after evacuating the contents out of the pressure chamber.

Claims9

Dependent claims

A method of manufacturing an igniter assembly, comprising the steps of:

coupling a central conductor to a firing end assembly including an igniter,
coupling the firing end assembly to an extension containing a pressure chamber,
disposing a valve assembly in the pressure chamber of the extension, the valve assembly including a valve stem, and the valve stem and/or a sealing device located around the valve stem sealing the pressure chamber when the valve stem is biased away from the firing end assembly by a spring,
evacuating contents of the pressure chamber by pressing the valve stem toward the spring and allowing contents of the pressure chamber to travel past the valve stem and out of the pressure chamber,
filling the pressure chamber with an insulating medium by pressing the valve stem toward the spring and allowing the insulating medium to travel past the valve stem and into the pressure chamber after evacuating the contents out of the pressure chamber,
biasing the valve stem away from the firing end assembly with the spring so that the valve stem maintains a seal of the pressure chamber containing the insulating medium, and
coupling an ignition coil assembly including a coil to the central conductor.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/526,046Filed 30 Jul 2019
Priority: 27 Mar 2017
Published: 21 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

F02P 23/04
Other ignition: other physical ignition means, e.g. using laser rays
H01F 27/321
Insulating of coils, windings, or parts thereof: using a fluid for insulating purposes only
H01T 13/44
Structurally combined with other devices: with transformers, e.g. for high-frequency ignition
H01T 13/50
Sparking plugs: having means for ionisation of gap

Family

Application62/477,299Us provisional application · filed 27 Mar 2017
Application15/935,540Division · filed 26 Mar 2018
Application16/526,046Division
US 10,364,788 B2Related patent
US 10,774,805 B2Related patent
US 2018/0274514 A1Published application
US 2019/0353136 A1This patent

From the US filing history. Foreign family members aren’t listed.