US5054446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Idle revolution speed control apparatus for an internal combustion engine
Assignee: Mitsubishi Electric Corp
•
Filing: 1991-01-31
•
Granted: 1991-10-08
•
Expires: 2011-01-31
Abstract
Abstract An idle revolution speed control apparatus for an internal combustion engine comprises a detecting means to detect an electric quantity produced at an electricity generating unit consisting of a generator and a generator control device, an electricity variation quantity calculating means to calculate a variation quantity with respect to the electric quantity obtained by the detecting means, a correction quantity calculating means to calculate an idle revolution speed correction quantity on the basis of data obtained by the detecting means and the electricity variation quantity calculating means, and an adding means for adding the correction quantity obtained by the correction quantity calculating means.
Inventors
- 👤 Hirofumi Ohuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:54
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/02; F02D41/04; F02D41/08; F02D41/083; B; B60; B60W; B60W30/00; B60W30/18; B60W30/18009; B60W30/18027; B60W2710/00; B60W2710/06; B60W2710/0644; B60W2710/065
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
An idle revolution speed control apparatus for an internal combustion engine wherein an idle revolution speed is corrected in response to the operational condition of the engine which comprises: a detecting means to detect an electric quantity produced at an electricity generating unit consisting of a generator and a generator control device, an electricity variation quantity calculating means to calculate a variation quantity with respect to the electric quantity obtained by the detecting means, a correction quantity calculating means to calculate an idle revolution speed correction quantity on the basis of data obtained by the detecting means and the electricity variation quantity calculating means, and an adding means for adding the correction quantity obtained by the correction quantity calculating means.
Claim 2
Dependent Claim
120 words
An idle revolution speed control apparatus for an internal combustion engine wherein an idle revolution speed is corrected in response to the operational condition of the engine which comprises: a detecting means to detect an electric quantity produced at an electricity generating unit consisting of a generator and a generator control device, an electricity variation quantity calculating means to calculate a variation quantity with respect to the electric quantity obtained by the detecting means, a correction quantity calculating means to calculate an idle revolution speed correction quantity on the basis of data obtained by the detecting means and the electricity variation quantity calculating means, and an adding means for adding the correction quantity obtained by the correction quantity calculating means.
Claim 3
Dependent Claim
48 words
The idle revolution speed control apparatus according to claim 1, wherein the electricity variation quantity calculating means calculates a variation quantity on the basis of the error between a voltage of a battery at the present time and a voltage of the battery at a predetermined time past.
Claim 4
Dependent Claim
38 words
The idle revolution speed control apparatus according to claim 2, wherein the variation quantity obtained from the battery voltage is added to the correction quantity determined on the basis of a load to thereby obtain a control quantity.
References Cited (Backward Citations)
US4479472A
Cited
JPS595855A
Cited
JPS59155547A
Cited
US4553516A
Cited
JPS6030442A
Cited
US4633093A
Cited
US4766862A
Cited
JPS63297744A
Cited
US4877273A
Cited
JPH0275740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-07 | 1995-04-08 | 1995-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-07 | 1999-04-08 | 1999-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-07 | 2003-04-08 | 2003-10-08 | $7700.00 | Window Closed / Lapsed |