Patent EP0157952A1 successfully refreshed from Google Patents.
EP0157952A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fuelmixture-preheater
Assignee: Texas Instruments Holland BV
•
Filing: 1984-04-10
•
Granted: —
•
Expires: 2004-04-10
Abstract
Abstract The invention relates to a device (1) to pre-heat a fuel mixture in an intake manifold (12) of a combustion engine, said device consisting of a cylindrical body (3) having a side wall (5) and a bottom (4), provided in the wall of the intake manifold, said body being arranged on an electro- and heat insulating contact bearer (2) and which is secured on the intake manifold in an electro- and heat conducting way by means of a securing structure (10) the bottom of said body being provided with PTC pills (6) which are connected to a current conductor (9) and which are secured on the bottom in an electro- and heat conducting way. The bottom has such a thickness and shape that during pre-heating the fuel mixture a homogeneous heat conduction is created, the side wall (5) having securing means (10) to secure the pre-heater, and wherein it has such a thickness that together with the securing means it provides the required heat resistance upon heat transfer from and to the intake manifold.
Inventors
- 👤 Arie Van Der Ploeg
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 14:14
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; H05B3/12; H05B3/14; F; F02; F02M; F02M31/00; F02M31/02; F02M31/12; F02M31/135; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
191 words
A device to pre-heat a fuel mixture in an intake manifold of a combustion engine or the like, said device consisting of a cylindrical body having a side wall and a bottom which is provided in a cavity of the wall of the intake manifold, said body being arranged on an electro- and heat insulating contact bearer, and which is. secured on the intake manifold in an electro- and heat conducting manner by means of a securing structure, wherein the bottom side of the body, facing the contact barrier, contains PTC pills which are electrically connected to a current conductor by means of resilient contact, and which are secured on said bottom in an electrical and heat conducting way, characterized in that the bottom (4) has such a thickness and shape that during pre-heating the fuel mixture it effects a homogeneous heat conduction, that said side wall (5) is provided with securing means (10) forming said securing structure of the pre-heater, said side wall having such a thickness that together with said securing means it provides the required heat resistance upon the transfer of heat from and to the intake manifold.
Claim 2
Independent Claim
191 words
A device to pre-heat a fuel mixture in an intake manifold of a combustion engine or the like, said device consisting of a cylindrical body having a side wall and a bottom which is provided in a cavity of the wall of the intake manifold, said body being arranged on an electro- and heat insulating contact bearer, and which is. secured on the intake manifold in an electro- and heat conducting manner by means of a securing structure, wherein the bottom side of the body, facing the contact barrier, contains PTC pills which are electrically connected to a current conductor by means of resilient contact, and which are secured on said bottom in an electrical and heat conducting way, characterized in that the bottom (4) has such a thickness and shape that during pre-heating the fuel mixture it effects a homogeneous heat conduction, that said side wall (5) is provided with securing means (10) forming said securing structure of the pre-heater, said side wall having such a thickness that together with said securing means it provides the required heat resistance upon the transfer of heat from and to the intake manifold.
Claim 3
Dependent Claim
18 words
A device according to claim 1, characterized in that the securing means (10) are formed as an eye.
Claim 4
Independent Claim
28 words
A device according to claims 1 or 2, characterized in that between each one of the securing means and the intake manifold (12) a packing (13) is arranged.
Claim 5
Dependent Claim
28 words
A device according to claim 3, characterized in that between each one of the securing means and the intake manifold a washer of stainless steel (14) is placed.
Claim 6
Dependent Claim
22 words
A device according to claim 3, characterized in that between the securing means and the intake manifold a thermal diode is arranged.
Claim 7
Independent Claim
28 words
A device according to one or various ones of the preceding claims, characterized in that the resilient contacts (7) are formed integrally with a star-shaped securing member (8).
Claim 8
Dependent Claim
30 words
A device according to claim 1, characterized in that in the event in which said side wall is a thermally controlled and electric insulation, a separate mass contact is provided.
Claim 9
Independent Claim
33 words
A device according to one or various ones of the preceding claims, characterized in that the contact bearer (2) is secured to the bottom by means of a turn/click releasable connection (bayonet connection).
Claim 10
Independent Claim
56 words
A device according to one or various ones of the preceeding claims, characterized in that the bottom (4) has a configuration which enables the split-up of the main flow of the mixture to take place smoothly when considered in a flow-technical way, wherein said bottom may be intersected longitudinally of said flow with droplet-collecting slots (15).
Claim 11
Independent Claim
22 words
A device according to one or various ones of the preceding claims, characterized in that at the location of the PTC elements
Claim 12
Dependent Claim
10 words
(6) the bottom (4) is provided with thinner sections (14).
Claim 13
Dependent Claim
10 words
(6) the bottom (4) is provided with thinner sections (14).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.