Patent US2829301A successfully refreshed from Google Patents.
Patent US2136014A successfully refreshed from Google Patents.
Patent EP0152001A2 successfully refreshed from Google Patents.
EP0152001A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method and apparatus for controlling internal combustion engines
Assignee: Hitachi Ltd
•
Filing: 1985-01-28
•
Granted: —
•
Expires: 2005-01-28
Abstract
Abstract A control method and apparatus for an internal combustion engine are arranged such that, for each of the operating condition sections (A, B, C) of an internal combustion engine (1), a deviation (K,) of a feedback control value in the section from a reference value is detected and written in a region in a memory corresponding to the section in the form of a map, and the deviation (Kℓ) is read out such as to be used as a correction value when control is effected in relation to the corresponding operating condition section. In such control apparatus, whether or not the number of regions in the memory into which deviation values for operating condition sections (Tp, N) have already been written has reached a predetermined value is examined. When the number has reached the predetermined value, a deviation value is written into each of the regions in the memory into which no deviation values have yet been written, this deviation value already being stored in the adjacent region in the memory in which writing of deviation data has already been completed, whereby the feedback control delay can be eliminated.
Inventors
- 👤 Masahide Sakamoto
- 👤 Masami Shida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 18:47
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/24; F02D41/26; F02D41/2406; F02D41/2496; F02D41/2409; F02D41/2416; F02D41/2425; F02D41/2429; F02D41/2451; F02D41/2454; F02D45/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
161 words
In a control apparatus for an internal combustion engine of the type in which a deviation value of a feedback control value from a reference value for each of the operating condition sections of said engine is stored in a region in a memory in the form of a map and is read out such as to be used as a correction value when control is effected in relation to the corresponding operating condition section, an electronic control apparatus for an internal combustion engine characterized by comprising an arrangement wherein the number of regions in said memory into which deviations values for said operating condition sections have already been written is examined, and when said number reaches a predetermined value, a deviation value is written into each of the regions in said memory into which no deviation values have yet been written, this deviation value already being stored in the adjacent region in which writing of deviation data has been completed.
Claim 2
Dependent Claim
161 words
In a control apparatus for an internal combustion engine of the type in which a deviation value of a feedback control value from a reference value for each of the operating condition sections of said engine is stored in a region in a memory in the form of a map and is read out such as to be used as a correction value when control is effected in relation to the corresponding operating condition section, an electronic control apparatus for an internal combustion engine characterized by comprising an arrangement wherein the number of regions in said memory into which deviations values for said operating condition sections have already been written is examined, and when said number reaches a predetermined value, a deviation value is written into each of the regions in said memory into which no deviation values have yet been written, this deviation value already being stored in the adjacent region in which writing of deviation data has been completed.
Claim 3
Dependent Claim
68 words
An electronic control apparatus for an internal combustion engine according to Claim l, wherein, when said deviation value for any one of said operating condition sections is zero, a minimum value which is determined on the basis of a minimum resolving power by which deviation data can be written into said memory is written into a predetermined region in said memory which corresponds to the operating condition section.
Claim 4
Dependent Claim
160 words
In a control system for an internal combustion engine of the type in which a deviation value of a feedback control value from a reference value for each of the operating condition sections of said engine is stored in a region in a memory in the form of a map and is read out such as to be used as a correction value when control is effected in relation -to the corresponding operating condition section, a control method for an internal combustion engine characterized by comprising an arrangement wherein the number of regions in said memory into which deviations values for said operating condition sections have already been written is examined, and when said number reaches a predetermined value, a deviation value is written into each of the regions in said memory into which no deviation values have yet been written, this deviation value already being stored in the adjacent region in which writing of deviation data has been completed.
Claim 5
Dependent Claim
160 words
In a control system for an internal combustion engine of the type in which a deviation value of a feedback control value from a reference value for each of the operating condition sections of said engine is stored in a region in a memory in the form of a map and is read out such as to be used as a correction value when control is effected in relation -to the corresponding operating condition section, a control method for an internal combustion engine characterized by comprising an arrangement wherein the number of regions in said memory into which deviations values for said operating condition sections have already been written is examined, and when said number reaches a predetermined value, a deviation value is written into each of the regions in said memory into which no deviation values have yet been written, this deviation value already being stored in the adjacent region in which writing of deviation data has been completed.
Claim 6
Dependent Claim
61 words
A method according to Claim 3, wherein, when said deviation value for any one of said operating condition sections is zero, a minimum value which is determined on the basis of a minimum resolving power by which deviation data can be written into said memory is written into a predetermined region in said memory which corresponds to the operating condition section.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.