US4750463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection system for an air-compression internal-combustion engine with electronic regulation
Assignee: University of Manitoba
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Filing: 1987-01-20
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Granted: 1988-06-14
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Expires: 2007-01-20
Abstract
Abstract An electronically regulated fuel injection system for an internal combustion engine with a switchable safety and emergency driving device has a mechanical coupling which mechanically couples the accelerator pedal to the regulator. This coupling operatively interferes with a mechanical connection between a controller and the final control element that determines the quantity of fuel to be injected, after a fault signal has been outputted by a signal processing unit to a switchover element, which switches over control of the final control element to the simple regulator.
Inventors
- 👤 Wolfgang Peter
- 👤 Frank Thoma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:12
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/22; F02D41/221; F02D11/00; F02D11/06; F02D11/10; F02D11/107; F02D41/30; F02D41/38; F02D41/40; F02D41/406; F02D41/407; F02D2041/224; F02D2041/226; F02D2041/227; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
216 words
Fuel injection system for an air-compression internal-combustion engine with electronic regulation, having a signal processing unit to which signals of an accelerator pedal position sensor are fed, and a controller connected to the signal processing unit to adjust positioning of a final control element of an injection pump which determines a quantity of fuel injected and, simple regulator means connected permanently to the accelerator pedal and a switchover element for switching control of the final control element to the simple regulator means as part of a safety and emergency driving device, the improvement comprising: mechanical coupling means for mechanically coupling said accelerator pedal to the final control element and for operatively interferring with a mechanical connection between the controller and the final control element after a fault signal is outputted by the signal processing unit to the switchover element, wherein said mechanical connection comprises a connecting rod articulated to the final control member and a cam piece provided as a guide means for changing the position of the connecting rod, one end of said cam piece being pivotably mounted on a control arm of the controller and its other end on a regulator arm of the simple regulator means, with said switchover element engaging and determining the position of the connecting rod in the cam piece.
Claim 2
Dependent Claim
216 words
Fuel injection system for an air-compression internal-combustion engine with electronic regulation, having a signal processing unit to which signals of an accelerator pedal position sensor are fed, and a controller connected to the signal processing unit to adjust positioning of a final control element of an injection pump which determines a quantity of fuel injected and, simple regulator means connected permanently to the accelerator pedal and a switchover element for switching control of the final control element to the simple regulator means as part of a safety and emergency driving device, the improvement comprising: mechanical coupling means for mechanically coupling said accelerator pedal to the final control element and for operatively interferring with a mechanical connection between the controller and the final control element after a fault signal is outputted by the signal processing unit to the switchover element, wherein said mechanical connection comprises a connecting rod articulated to the final control member and a cam piece provided as a guide means for changing the position of the connecting rod, one end of said cam piece being pivotably mounted on a control arm of the controller and its other end on a regulator arm of the simple regulator means, with said switchover element engaging and determining the position of the connecting rod in the cam piece.
Claim 3
Dependent Claim
87 words
Fuel injection system according to claim 1, wherein the switchover element is a solenoid with an actuating rod connected to said connecting rod, said switchover element maintaining, counter to a spring, the connecting rod in a position in said cam piece allowing for the electronic regulation of the fuel injection quantity; said connecting rod being transferable by said switchover element into a position in said cam piece for producing only mechanical regulation when the solenoid is modulated after the fault signal is received by the switchover element.
Claim 4
Dependent Claim
36 words
Fuel injection system according claim 2, wherein the cam piece has a cullis for the connecting rod extending virtually along the total length of the cullis to accomodate changes in the position of said connecting rod.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-14 | 1991-12-14 | 1992-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-14 | 1995-12-14 | 1996-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-14 | 1999-12-14 | 2000-06-14 | $7700.00 | Window Closed / Lapsed |