US3689755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine control systems
Assignee: ZF International UK Ltd
•
Filing: 1970-09-15
•
Granted: 1972-09-05
•
Expires: 1990-09-15
Abstract
Abstract An engine control system, particularly for a road vehicle, includes two transducers for producing two signals representing any two of the parameters engine speed, manifold pressure and throttle angle. These signals provide input to a matrix which gives an n-bit output determined by both input signals, where n is at least two. This output controls an engine characteristic.
Inventors
- 👤 Duncan Barry Hodgson
- 👤 Malcolm Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:30
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/02; G06F1/03; F; F02; F02D; F02D41/00; F02D41/24; F02D41/2406; F02D9/00; F02P; F02P5/00; F02P5/04; F02P5/145; F02P5/15; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0228; F02D2700/023; F02D2700/0233; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40; Y10; Y10S; Y10S261/00; Y10S261/74
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
281 words
An engine control system for controlling an engine characteristic comprising in combination a matrix unit having a first set of input lines and a second set of input lines arranged in groups of n lines, where n is at least two, with each line in the second set crossing each line in the first set, and connections being made between lines in the first and second sets in accordance with the engine characteristic being controlled and the nature of the required control, a first transducer producing a signal representing a first engine parameter, means whereby the output from the first transducer energizes one of the lines in the first set, depending on the value of the parameter, a second transducer producing a signal representing a second engine parameter, means whereby the output from the second transducer energizes one of the groups of n lines in the second set of input lines, and control means having n input connections the first of which is connectible to the first line in each group of n lines, the second of which is connectible to the second line in each group of n lines and so on, the arrangement being such that at any instant the energized group of n lines is connected to the control means so that for given values of the two engine parameters the control means receives a n-bit digital input signal, dependent on the interconnections between the energized line in the first set and the energized group of lines in the second set, the control means serving to control the engine characteristic in accordance with said input signal, and wherein the two engine parameters comprise manifold pressure and throttle angle.
Claim 2
Dependent Claim
281 words
An engine control system for controlling an engine characteristic comprising in combination a matrix unit having a first set of input lines and a second set of input lines arranged in groups of n lines, where n is at least two, with each line in the second set crossing each line in the first set, and connections being made between lines in the first and second sets in accordance with the engine characteristic being controlled and the nature of the required control, a first transducer producing a signal representing a first engine parameter, means whereby the output from the first transducer energizes one of the lines in the first set, depending on the value of the parameter, a second transducer producing a signal representing a second engine parameter, means whereby the output from the second transducer energizes one of the groups of n lines in the second set of input lines, and control means having n input connections the first of which is connectible to the first line in each group of n lines, the second of which is connectible to the second line in each group of n lines and so on, the arrangement being such that at any instant the energized group of n lines is connected to the control means so that for given values of the two engine parameters the control means receives a n-bit digital input signal, dependent on the interconnections between the energized line in the first set and the energized group of lines in the second set, the control means serving to control the engine characteristic in accordance with said input signal, and wherein the two engine parameters comprise manifold pressure and throttle angle.
Claim 3
Dependent Claim
281 words
An engine control system for controlling an engine characteristic comprising in combination a matrix unit having a first set of input lines and a second set of input lines arranged in groups of n lines, where n is at least two, with each line in the second set crossing each line in the first set, and connections being made between lines in the first and second sets in accordance with the engine characteristic being controlled and the nature of the required control, a first transducer producing a signal representing a first engine parameter, means whereby the output from the first transducer energizes one of the lines in the first set, depending on the value of the parameter, a second transducer producing a signal representing a second engine parameter, means whereby the output from the second transducer energizes one of the groups of n lines in the second set of input lines, and control means having n input connections the first of which is connectible to the first line in each group of n lines, the second of which is coNnectible to the second line in each group of n lines, and so on, the arrangement being such that at any instant the energized group of n lines is connected to the control means so that for given values of the two engine parameters the control means receives a n-bit digital input signal, dependent on the interconnections between the energized line in the first set and the energized group of lines in the second set, the control means serving to control the engine characteristic in accordance with said input signal, and wherein the two engine parameters comprise manifold pressure and engine speed.
Claim 4
Dependent Claim
281 words
An engine control system for controlling an engine characteristic comprising in combination a matrix unit having a first set of input lines and a second set of input lines arranged in groups of n lines, where n is at least two, with each line in the second set crossing each line in the first set, and connections being made between lines in the first and second sets in accordance with the engine characteristic being controlled and the nature of the required control, a first transducer producing a signal representing a first engine parameter, means whereby the output from the first transducer energizes one of the lines in the first set, depending on the value of the parameter, a second transducer producing a signal representing a second engine parameter, means whereby the output from the second transducer energizes one of the groups of n lines in the second set of input lines, and control means having n input connections the first of which is connectible to the first line in each group of n lines, the second of which is coNnectible to the second line in each group of n lines, and so on, the arrangement being such that at any instant the energized group of n lines is connected to the control means so that for given values of the two engine parameters the control means receives a n-bit digital input signal, dependent on the interconnections between the energized line in the first set and the energized group of lines in the second set, the control means serving to control the engine characteristic in accordance with said input signal, and wherein the two engine parameters comprise manifold pressure and engine speed.
Claim 5
Dependent Claim
281 words
An engine control system for controlling an engine characteristic comprising in combination a matrix unit having a first set of input lines and a second set of input lines arranged in groups of n lines, where n is at least two, with each line in the second set crossing each line in the first set, and connections being made between lines in the first and second sets in accordance with the engine characteristic being controlled and the nature of the required control, a first transducer producing a signal representing a first engine parameter, means whereby the output from the first transducer energizes one of the lines in the first set, depending on the value of the parameter, a second transducer producing a signal representing a second engine parameter, means whereby the output from the second transducer energizes one of the groups of n lines in the second set of input lines, and control means having n input connections the first of which is connectible to the first line in each group of n lines, the second of which is connectible to the second line in each group of n lines and so on, the arrangement being such that at any instant the energized group of n lines is connected to the control means so that for given values of the two engine parameters the control means receives a n-bit digital input signal, dependent on the interconnections between the energized line in the first set and the energized group of lines in the second set, the control means serving to control the engine characteristic in accordance with said input signal, and wherein the two engine parameters comprise engine speed and throttle angle.
Claim 6
Dependent Claim
281 words
An engine control system for controlling an engine characteristic comprising in combination a matrix unit having a first set of input lines and a second set of input lines arranged in groups of n lines, where n is at least two, with each line in the second set crossing each line in the first set, and connections being made between lines in the first and second sets in accordance with the engine characteristic being controlled and the nature of the required control, a first transducer producing a signal representing a first engine parameter, means whereby the output from the first transducer energizes one of the lines in the first set, depending on the value of the parameter, a second transducer producing a signal representing a second engine parameter, means whereby the output from the second transducer energizes one of the groups of n lines in the second set of input lines, and control means having n input connections the first of which is connectible to the first line in each group of n lines, the second of which is connectible to the second line in each group of n lines and so on, the arrangement being such that at any instant the energized group of n lines is connected to the control means so that for given values of the two engine parameters the control means receives a n-bit digital input signal, dependent on the interconnections between the energized line in the first set and the energized group of lines in the second set, the control means serving to control the engine characteristic in accordance with said input signal, and wherein the two engine parameters comprise engine speed and throttle angle.
Claim 7
Dependent Claim
22 words
An engine control system as defined in claim 1, wherein the engine characteristic is the quantity of fuel supplied to the engine.
Claim 8
Dependent Claim
20 words
An engine control system as defined in claim 1, wherein the engine characteristic is the ignition timing of the engine.
Claim 9
Dependent Claim
22 words
An engine control system as defined in claim 2, wherein the engine characteristic is the quantity of fuel supplied to the engine.
Claim 10
Dependent Claim
20 words
An engine control system as defined in claim 2, wherein the engine characteristic is the ignition timing of the engine.
Claim 11
Dependent Claim
22 words
An engine control system as defined in claim 3, wherein the engine characteristic is the quantity of fuel supplied to the engine.
Claim 12
Dependent Claim
20 words
An engine control system as defined in claim 3, wherein the engine characteristic is the ignition timing of the engine.
References Cited (Backward Citations)
US2925220A
Cited
US3010656A
Cited
US3110802A
Cited
US3345505A
Cited
US3412240A
Cited
US3474667A
Cited
US3472066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |