US3909601A
Expired / Lapsed
US
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Digital type electronic control system
Assignee: Denso Corp
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Filing: 1974-03-20
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Granted: 1975-09-30
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Expires: 1994-03-20
Abstract
Abstract A digital type electronic control system adapted for fuel injection control for an internal combustion engine, etc., in which displacement of a controlled object is detected and converted into a digital signal, a main pattern controlled variable preliminarily set in a controlled variable memory circuit is read out according to said digital signal and a correction variable is read out from an auxiliary pattern preliminarily set on the basis of fine division of one part of the displacement of said controlled object in an auxiliary memory circuit, thereby to control said controlled object according to said controlled variable and said correction variable.
Inventors
- 👤 Masao Yamawaki
- 👤 Masakazu Ninomiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:26
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/24; F02D41/2406; F02D41/2409; F02D41/2412
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
149 words
A digital type electronic control system comprising; a detector for detecting the operational state of a controlled object and generating a detection signal; converter means connected to said detector for converting said detection signal into a digital signal; and controlled variable memory means connected to said cOnverter means for reading out a controlled variable from a main pattern preliminarily set therein according to said digital signal, wherein the improvement comprises; auxiliary memory means provided with an auxiliary pattern preliminarily formed on fine division of a partial region of said main pattern, and connected to said converter means for reading out a correcting variable from said auxiliary pattern according to said digital signal; and adder means connected to said controlled variable memory means and said auxiliary memory means for adding said controlled variable and said correcting variable to achieve the characteristic control of said controlled object according to said sum.
Claim 2
Dependent Claim
149 words
A digital type electronic control system comprising; a detector for detecting the operational state of a controlled object and generating a detection signal; converter means connected to said detector for converting said detection signal into a digital signal; and controlled variable memory means connected to said cOnverter means for reading out a controlled variable from a main pattern preliminarily set therein according to said digital signal, wherein the improvement comprises; auxiliary memory means provided with an auxiliary pattern preliminarily formed on fine division of a partial region of said main pattern, and connected to said converter means for reading out a correcting variable from said auxiliary pattern according to said digital signal; and adder means connected to said controlled variable memory means and said auxiliary memory means for adding said controlled variable and said correcting variable to achieve the characteristic control of said controlled object according to said sum.
Claim 3
Dependent Claim
20 words
A digital type electronic control system according to claim 1, in which said controlled object is an internal combustion engine.
Claim 4
Dependent Claim
29 words
A digital type electronic control system according to claim 1, in which the controlled characteristic of said controlled object is the fuel injection characteristic in an internal combustion engine.
Claim 5
Dependent Claim
26 words
A digital type electronic control system according to claim 1, in which the controlled characteristic of said controlled object is the temperature characteristic in a furnace.
Claim 6
Dependent Claim
171 words
A digital type electronic control system comprising; a detector for detecting the operational state of a controlled object and generating a detection signal; converter means connected to said detector for converting said detection signal into a digital signal; and controlled variable memory means connected to said converter means and preliminarily set with a main pattern, for reading out a controlled variable according to said digital signal, wherein the improvement comprises; auxiliary memory means preliminarily set with an auxiliary pattern formed on fine division of a partial region of said main pattern, and connected to said converter means for reading out a correcting variable form said auxiliary pattern according to said digital signal; the main and the auxiliary pattern being formed by the linear approximation at each step of said digital signal; and adder means connected to the outputs of said controlled variable memory means and said auxiliary memory means for adding said controlled variable and said correcting variable to achieve the characteristic control of said controlled object according to said sum.
Claim 7
Dependent Claim
171 words
A digital type electronic control system comprising; a detector for detecting the operational state of a controlled object and generating a detection signal; converter means connected to said detector for converting said detection signal into a digital signal; and controlled variable memory means connected to said converter means and preliminarily set with a main pattern, for reading out a controlled variable according to said digital signal, wherein the improvement comprises; auxiliary memory means preliminarily set with an auxiliary pattern formed on fine division of a partial region of said main pattern, and connected to said converter means for reading out a correcting variable form said auxiliary pattern according to said digital signal; the main and the auxiliary pattern being formed by the linear approximation at each step of said digital signal; and adder means connected to the outputs of said controlled variable memory means and said auxiliary memory means for adding said controlled variable and said correcting variable to achieve the characteristic control of said controlled object according to said sum.
Claim 8
Dependent Claim
20 words
A digital type electronic control system according to claim 5, in which said controlled object is an internal combustion engine.
Claim 9
Dependent Claim
29 words
A digital type electronic control system according to claim 5, in which the controlled characteristic of said controlled object is the fuel injection characteristic of an internal combustion engine.
Claim 10
Dependent Claim
26 words
A digital type electronic control system according to claim 5, in which the controlled characteristic of said controlled object is the temperature characteristic of a furnace.
Claim 11
Dependent Claim
173 words
A digital type electronic control system comprising; a detector for detecting the operational state of a controlled object and generating a detection signal; converter means connected to said detector for converting said detection signal into a digital signal; and controlled variable memory means connected to said converter means and preliminarily set with a main pattern for reading out a controlled variable from the main pattern according to said digital signal, wherein the improvement comprises; auxiliary memory means a preliminarily set with an auxiliary pattern formed on fine division of a partial region of said main pattern, and connected to said converter means for reading out a correcting variable from said auxiliary pattern according to said digital signal; the main and the auxiliary pattern being formed by the stepwise approximation at each step of said digital signal; and adder means connected to said controlled variable memory means and said auxiliary memory means for adding said controlled variable and said correcting variable to achieve the characteristic control of said controlled object according to said sum.
Claim 12
Dependent Claim
173 words
A digital type electronic control system comprising; a detector for detecting the operational state of a controlled object and generating a detection signal; converter means connected to said detector for converting said detection signal into a digital signal; and controlled variable memory means connected to said converter means and preliminarily set with a main pattern for reading out a controlled variable from the main pattern according to said digital signal, wherein the improvement comprises; auxiliary memory means a preliminarily set with an auxiliary pattern formed on fine division of a partial region of said main pattern, and connected to said converter means for reading out a correcting variable from said auxiliary pattern according to said digital signal; the main and the auxiliary pattern being formed by the stepwise approximation at each step of said digital signal; and adder means connected to said controlled variable memory means and said auxiliary memory means for adding said controlled variable and said correcting variable to achieve the characteristic control of said controlled object according to said sum.
Claim 13
Dependent Claim
131 words
A digital type electronic control system comprising: a detector for detecting the operational state of a controlled object and generating a detection signal; converter means connected to said detector for converting said detection signal into a digital signal; and controlled variable memory means connected to said converter means and preliminarily set with a main pattern for reading out a controlled variable from the main pattern according to said digital signal, wherein the improvement comprises an auxiliary pattern preliminarily set on the basis of fine division of one part of said main pattern, and connecting means connected to said converter means for reading out the correction variable corresponding to said digital signal from said auxiliary pattern and for partially correcting characteristic control of said controlled variable by means of said correction variable.
Claim 14
Dependent Claim
131 words
A digital type electronic control system comprising: a detector for detecting the operational state of a controlled object and generating a detection signal; converter means connected to said detector for converting said detection signal into a digital signal; and controlled variable memory means connected to said converter means and preliminarily set with a main pattern for reading out a controlled variable from the main pattern according to said digital signal, wherein the improvement comprises an auxiliary pattern preliminarily set on the basis of fine division of one part of said main pattern, and connecting means connected to said converter means for reading out the correction variable corresponding to said digital signal from said auxiliary pattern and for partially correcting characteristic control of said controlled variable by means of said correction variable.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |