Patent US4771751A successfully refreshed from Google Patents.
US4771751A
Expired / Lapsed
US
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Fuel rail
Assignee: Ford Motor Co
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Filing: 1987-04-27
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Granted: 1988-09-20
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Expires: 2007-04-27
Abstract
Abstract A fuel rail is defined by a spacer member sandwiched between a throttle body and an engine intake manifold, the spacer member having air channels connecting the throttle body air induction passages to the manifold inlet bores, the spacer member also having at least one longitudinal bore constituting a fuel passage, and fuel injector receiving cups communicating with the fuel passages.
Inventors
- 👤 Matthew Haigh
- 👤 Martin J. D. Herbert
- 👤 William J. J. O'Leary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:49
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/46; F02M69/462; F02M69/465
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
163 words
A fuel rail for a V-configuration automotive type internal combustion engine having a throttle body superimposed over an intake manifold, the throttle body having an air plenum above an induction channel aligned with a throttle bore passage in the manifold for flow of air to the engine cylinders, the rail including a spacer body mounted sealingly between the throttle body and the manifold of the engine and having air induction passages therethrough to connect the throttle body channels and the manifold, the spacer body having at least one longitudinal bore defining a fuel passage extending through the spacer body, and a plurality of fuel injector receiving cups projecting from and communicating with the fuel passage, the spacer body comprising a number of separated spacer members, and rail member means through which the fuel passage runs joining the spacer members together, the rail member means forming a dividing wall in the air passage through each spacer member providing separate air passages from the plenum.
Claim 2
Dependent Claim
163 words
A fuel rail for a V-configuration automotive type internal combustion engine having a throttle body superimposed over an intake manifold, the throttle body having an air plenum above an induction channel aligned with a throttle bore passage in the manifold for flow of air to the engine cylinders, the rail including a spacer body mounted sealingly between the throttle body and the manifold of the engine and having air induction passages therethrough to connect the throttle body channels and the manifold, the spacer body having at least one longitudinal bore defining a fuel passage extending through the spacer body, and a plurality of fuel injector receiving cups projecting from and communicating with the fuel passage, the spacer body comprising a number of separated spacer members, and rail member means through which the fuel passage runs joining the spacer members together, the rail member means forming a dividing wall in the air passage through each spacer member providing separate air passages from the plenum.
Claim 3
Dependent Claim
181 words
A fuel rail for a V-configuration automotive type internal combustion engine having a throttle body superimposed over an intake manifold, the throttle body having an air plenum above an induction channel aligned with a throttle bore passage in the manifold for flow of air to the engine cylinders, the rail including a spacer body mounted sealingly between the throttle body and the manifold of the engine and having air induction passages therethrough to connect the throttle body channels and the manifold, the spacer body having at least one longitudinal bore defining a fuel passage extending through the spacer body, and a plurality of fuel injector receiving cups projecting from and communicating with the fuel passage, the spacer body comprising a number of separated spacer members, and rail member means through which the fuel passage runs joining the spacer members together, the fuel passage being a single longitudinal bore including the rail member means and being positioned centrally above the engine providing a single straight passage for the fuel to flow to cups for the injectors on both banks of the engine.
Claim 4
Dependent Claim
181 words
A fuel rail for a V-configuration automotive type internal combustion engine having a throttle body superimposed over an intake manifold, the throttle body having an air plenum above an induction channel aligned with a throttle bore passage in the manifold for flow of air to the engine cylinders, the rail including a spacer body mounted sealingly between the throttle body and the manifold of the engine and having air induction passages therethrough to connect the throttle body channels and the manifold, the spacer body having at least one longitudinal bore defining a fuel passage extending through the spacer body, and a plurality of fuel injector receiving cups projecting from and communicating with the fuel passage, the spacer body comprising a number of separated spacer members, and rail member means through which the fuel passage runs joining the spacer members together, the fuel passage being a single longitudinal bore including the rail member means and being positioned centrally above the engine providing a single straight passage for the fuel to flow to cups for the injectors on both banks of the engine.
References Cited (Backward Citations)
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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) | 1991-09-20 | 1992-03-21 | 1992-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-20 | 1996-03-21 | 1996-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-20 | 2000-03-21 | 2000-09-20 | $7700.00 | Window Closed / Lapsed |