COIL ASSEMBLY FOR AN ENGINE

• US 20150380155A1
• Filed: 09/13/2015
• Published: 12/31/2015
• Est. Priority Date: 09/13/2015
• Status: Abandoned Application

• Current Assignee: Perkins Engines Company Limited (Caterpillar Incorporated)
• Original Assignee: Perkins Engines Company Limited (Caterpillar Incorporated)
• Inventors: Kanithi, Veera S.
• Application Number:
  US14/852,612
• Publication Number:
  US 20150380155A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F02F 1/242 Arrangement of spark plugs or injectors
• CPC Class Codes: F02P 13/00 Sparking plugs structurally combined with other parts of internal-combustion engines connection of ignition coil to spark plug connector F02P3/02; with fuel injectors F02M57/06 ; spark plug connector per se H01T13/04 – H01T13/06; predominant aspects of sparking plug, see H01T13/40 – H01T13/44
• CPC Class Codes: F02P 3/02 having inductive energy storage, e.g. arrangements of induction coils ignition coils structurally combined with sparking plugs F02P13/00; constructional details of ignition coils H01F38/12
• CPC Class Codes: H01T 13/04 Means providing electrical connection to sparking plugs
• CPC Class Codes: H01T 13/40 structurally combined with other devices combined or associated with fuel injectors F02M57/06; structurally combined with other parts of internal-combustion engines F02P13/00

Abstract

A coil assembly for electrically connecting a spark plug with an ignition system for a combustion engine having a cylinder head is provided. The coil assembly includes an electrical transducer member having an elongate portion and a head portion. The coil assembly also includes a sleeve structured and arranged to support and seal the electrical transducer member from an ambient environment. A first end of the sleeve defines a sealing groove. The sleeve also includes a shoulder portion defined at the first end. The shoulder portion of the sleeve is in an abutment relationship with the step in the cylinder head coinciding with an assembled state of the sleeve with the cylinder head. The coil assembly further includes a sealing member received within the sealing groove of the sleeve. The head portion of the electrical transducer member is sealed with the second end of the sleeve in the assembled state.

Claims

1. A coil assembly for electrically connecting a spark plug with an ignition system for a combustion engine having a cylinder head defining a recess therein, the recess having a first portion and a second portion defining a step adjacent to the first portion, the coil assembly comprising:

an electrical transducer member including an elongate portion, and a head portion disposed over the elongate portion and connected to the elongate portion;

a sleeve defining a first end and a second end, the first end of the sleeve defining a sealing groove disposed on an outer surface of the first end of the sleeve thereof;

the sleeve including;

a sealing portion disposed on the second end of the sleeve, and a shoulder portion being defined at the first end of the sleeve; and

a sealing member received within the sealing groove of the sleeve;

wherein the second end of the sleeve being selectively connectable within the recess of the cylinder head and the shoulder portion of the sleeve being in an abutment relationship with the step in the cylinder head coinciding with an assembled state of the sleeve with the cylinder head;

wherein the head portion of the electrical transducer member being sealed with the second end of the sleeve in the assembled state; and

wherein the sleeve being structured and arranged to support and seal the electrical transducer member from an ambient environment.