US4516552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air quality measuring device for a fuel injection installation
Assignee: Dr Ing HCF Porsche AG
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Filing: 1983-10-28
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Granted: 1985-05-14
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Expires: 2003-10-28
Abstract
Abstract In an air quantity measuring device for a continuously operating fuel injection system, the baffle plate which actuates the control piston of the fuel quantity distributor by way of a lever, is provided with a raised portion on the inflow side thereof; to reduce the air-resistance of the baffle plate in a predeterminable manner, the peak of the raised portion is disposed eccentrically to the baffle plate in the lever-side half thereof, whereby the same air quantity measuring devices can be used for different measuring ranges by installing baffle plates with differently shaped raised portions.
Inventors
- 👤 August Hofbauer
- 👤 Erich Exinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:03
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/46; F02M69/48
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
137 words
An air quantity measuring device of a continuously operating fuel injection installation for an internal combustion engine, comprising a baffle plate means pivotally arranged in a housing on a lever, the pivoting movements of the baffle plate means being dependent on the through-flowing air quantity, for actuating a control piston of a quantity distributor for the distribution of fuel to cylinders of the internal combustion engine, the baffle plate means being provided on its inflow side with a raised means for reducing its flow resistance, the raised means having a peak disposed eccentrically to the baffle plate means and including a first portion rising approximately from the center of the baffle plate means to said peak and a second portion dropping off from the peak to the edge of the baffle plate means and terminating flush therewith.
Claim 2
Dependent Claim
137 words
An air quantity measuring device of a continuously operating fuel injection installation for an internal combustion engine, comprising a baffle plate means pivotally arranged in a housing on a lever, the pivoting movements of the baffle plate means being dependent on the through-flowing air quantity, for actuating a control piston of a quantity distributor for the distribution of fuel to cylinders of the internal combustion engine, the baffle plate means being provided on its inflow side with a raised means for reducing its flow resistance, the raised means having a peak disposed eccentrically to the baffle plate means and including a first portion rising approximately from the center of the baffle plate means to said peak and a second portion dropping off from the peak to the edge of the baffle plate means and terminating flush therewith.
Claim 3
Dependent Claim
29 words
An air quantity measuring device according to claim 1, wherein the raised means is disposed in the half of the baffle plate means to which the lever is attached.
Claim 4
Dependent Claim
56 words
An air quantity measuring device according to claim 2, wherein the first portion is formed of a partial area rising wedge-shaped from the center of the baffle plate means and extending over the entire width thereof and the second portion is a partial area dropping off substantially spherically-shaped to the edge of the baffle plate means.
Claim 5
Dependent Claim
22 words
An air quantity measuring device according to claim 3, wherein the first portion has a flat contour in the wedge-shaped rising area.
Claim 6
Dependent Claim
22 words
An air quantity measuring device according to claim 3, wherein the first portion has an arcuate contour in the wedge-shaped rising area.
Claim 7
Dependent Claim
29 words
An air quantity measuring device according to claim 3, wherein the lever is integrated into the raised means so that an overall inflow surface results which is aerodynamically favorable.
Claim 8
Dependent Claim
33 words
An air quantity measuring device according to claim 6, wherein the lever is disposed substantially centrally with respect to the first portion and is surrounded by the same in an aerodynamically favorable manner.
Claim 9
Dependent Claim
27 words
An air quantity measuring device according to claim 7, wherein the raised means is formed of synthetic plastic material and is bonded to the baffle plate means.
Claim 10
Dependent Claim
27 words
An air quantity measuring device according to claim 7, wherein the baffle plate means is metallic and the raised means is pressed into the baffle plate means.
Claim 11
Dependent Claim
22 words
An air quantity measuring device according to claim 7, wherein the first portion has a flat contour in the wedge-shaped rising area.
Claim 12
Dependent Claim
22 words
An air quantity measuring device according to claim 7, wherein the first portion has an arcuate contour in the wedge-shaped rising area.
Claim 13
Dependent Claim
29 words
An air quantity measuring device according to claim 1, wherein the lever is integrated into the raised means so that an overall inflow surface results which is aerodynamically favorable.
Claim 14
Dependent Claim
32 words
An air quantity measuring device according to claim 12, wherein the lever is disposed centrally with respect to the first portion and is surrounded by the same in an aerodynamically favorable manner.
Claim 15
Dependent Claim
27 words
An air quantity measuring device according to claim 1, wherein the raised means is formed of synthetic plastic material and is bonded to the baffle plate means.
Claim 16
Dependent Claim
27 words
An air quantity measuring device according to claim 1, wherein the baffle plate means is metallic and the raised means is pressed into the baffle plate means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-13 | 1988-11-12 | 1989-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-13 | 1992-11-12 | 1993-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-13 | 1996-11-12 | 1997-05-14 | $7700.00 | Window Closed / Lapsed |