US4682097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Charging system for an automotive engine
Assignee: Subaru Corp
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Filing: 1986-06-05
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Granted: 1987-07-21
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Expires: 2006-06-05
Abstract
Abstract A balance vehicle speed at which mean charging current and mean discharging current are balanced is obtained. A charge stop vehicle speed corresponding to the balance vehicle speed is decided as a reference value. An actual vehicle speed is compared with the charge stop vehicle speed to produce a charge stop signal, when the actual vehicle speed is lower than the charge stop vehicle speed. A charging regulator is responsive to the charge stop signal for disabling the regulator so as to stop the charging of a battery.
Inventors
- 👤 Fujio Matsui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:13
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/1446; Y; Y02; Y02T; Y02T10/00; Y02T10/80; Y02T10/92
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
A charging system for an automotive engine having a regulator for regulating the charge of battery, a vehicle speed sensor, an engine speed sensor, and an electric load sensor, the system comprising: first means for obtaining a balance vehicle speed at which mean charging current and mean discharging current are substantially balanced; second means for deciding a charge stop vehicle speed corresponding to the balance vehicle speed; comparing means for comparing an actual vehicle speed with the charge stop vehicle speed and for producing a charge stop signal; third means responsive to the charge stop signal for disabling the regulator so as to stop the charging of the battery.
Claim 2
Dependent Claim
109 words
A charging system for an automotive engine having a regulator for regulating the charge of battery, a vehicle speed sensor, an engine speed sensor, and an electric load sensor, the system comprising: first means for obtaining a balance vehicle speed at which mean charging current and mean discharging current are substantially balanced; second means for deciding a charge stop vehicle speed corresponding to the balance vehicle speed; comparing means for comparing an actual vehicle speed with the charge stop vehicle speed and for producing a charge stop signal; third means responsive to the charge stop signal for disabling the regulator so as to stop the charging of the battery.
Claim 3
Dependent Claim
58 words
The system according to claim 1 wherein the first means comprising means for obtaining generating current based on the output of the engine speed sensor, means for obtaining mean charging and discharging current dependent on the generating current and electric load, and means for obtaining mean vehicle speed dependent on the vehicle speed for a set time period.
Claim 4
Dependent Claim
20 words
The system according to claim 1 wherein the charge stop vehicle speed decreases with increase of the balance vehicle speed.
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) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |