Patent US4658814A successfully refreshed from Google Patents.
US4253330A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel consumption measuring apparatus
Assignee: Nissan Motor Co Ltd
•
Filing: 1979-05-18
•
Granted: 1981-03-03
•
Expires: 1999-05-18
Abstract
Abstract A fuel consumption measuring apparatus for internal combustion engines is disclosed which includes a control chamber provided at its inlet with a fuel injection system connected to the fuel supply system. A fuel level sensor is located at a predetermined position within the control chamber for detecting the level of the fuel in the control chamber with respect to the predetermined position. A control circuit is associated with the sensor for actuating the fuel injection system so as to allow injection of fuel into the control chamber when the fuel level is below the predetermined position. The number of fuel injections is counted and indicated by an indicating unit.
Inventors
- 👤 Yoshiaki Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:00
CPC Classifications
G; G01; G01F; G01F9/00; G01F9/001; F; F02; F02B; F02B2275/00; F02B2275/14; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
169 words
A fuel consumption measuring apparatus for use with an internal combustion engine including a carburetor and a fuel supply system adapted to provide fuel of a regulated pressure, said apparatus comprising a control chamber connected at its outlet to said carbureter and provided at its inlet with fuel injection means connected to said fuel supply system a fuel level sensor located at a predetermined position within said control chamber and having two different conditions, one established when the level of the fuel charged in said control chamber is below the predetermined position and the other established when the fuel level is at or above the predetermined position a control circuit including a pulse signal generator and responsive to the beginning of the one condition of said sensor for rendering said pulse signal generator operative to actuate said fuel injection means for a predetermined period of time, and an indicator unit associated with said control circuit for counting the number of occurences of the fuel injection and indicating the result.
Claim 2
Dependent Claim
169 words
A fuel consumption measuring apparatus for use with an internal combustion engine including a carburetor and a fuel supply system adapted to provide fuel of a regulated pressure, said apparatus comprising a control chamber connected at its outlet to said carbureter and provided at its inlet with fuel injection means connected to said fuel supply system a fuel level sensor located at a predetermined position within said control chamber and having two different conditions, one established when the level of the fuel charged in said control chamber is below the predetermined position and the other established when the fuel level is at or above the predetermined position a control circuit including a pulse signal generator and responsive to the beginning of the one condition of said sensor for rendering said pulse signal generator operative to actuate said fuel injection means for a predetermined period of time, and an indicator unit associated with said control circuit for counting the number of occurences of the fuel injection and indicating the result.
Claim 3
Dependent Claim
31 words
A fuel consumption measuring apparatus as set forth in claim 1, in which said pulse signal generator provides a train of operational pulses while said sensor remains in the one condition.
Claim 4
Dependent Claim
34 words
A fuel consumption measuring apparatus as set forth in claim 2, in which the amount of fuel to be injected once is determined to cause the fuel level to arrive at said predetermined position.
Claim 5
Dependent Claim
38 words
A fuel consumption measuring apparatus as set forth in claim 1, in which said pulse signal generator provides an operational pulse for a time longer than the time during which said sensor is maintained in the one condition.
Claim 6
Dependent Claim
37 words
A fuel consumption measuring apparatus as set forth in claim 1, in which said sensor comprises a bridge circuit including a thermistor and having an output pulse signal generator responsive to the output of said bridge circuit.
Claim 7
Dependent Claim
49 words
A fuel consumption measuring apparatus as set forth in claim 5, in which said control circuit further comprises a transistor operative to the pulse supplied from said pulse signal generator, and a valve actuator which is energized by the conduction of said transistor to open said fuel injection means.
Claim 8
Dependent Claim
43 words
A fuel consumption measuring apparatus as set forth in claim 6, in which said indicator unit includes a counter for counting the number of occurrences of pulses supplied from said pulse signal generator, and an indicator for indicating the result of said counter.
Claim 9
Dependent Claim
49 words
A fuel consumption measuring apparatus as set forth in claim 7, in which said counter comprises a reset signal input terminal for permitting operators to reset said counter at a desired time thereby to measure an amount of fuel which will be consumed for a desired period of time.
Claim 10
Dependent Claim
22 words
A fuel consumption measuring apparatus as set forth in claim 1, in which a baffle assembly is placed in said control chamber.
Claim 11
Dependent Claim
40 words
A fuel consumption measuring apparatus as set forth in claim 1, in which a cylinder formed in its periphery with a number of holes is placed in said control chamber and said fuel level sensor is provided within said cylinder.
References Cited (Backward Citations)
US1987981A
Cited
US3252322A
Cited
FR1564743A
Cited
US3714823A
Cited
DE2403562A1
Cited
US4012948A
Cited
DE2534941A1
Cited
DE2633698A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |