EP0036753A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Overspeed engine control
Assignee: Ogden Electronics Ltd
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Filing: 1981-03-18
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Granted: —
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Expires: 2001-03-18
Abstract
Abstract Apparatus for controlling the speed of an engine of a vehicle includes a processor (26) for comparing actual speed of the engine with a reference speed and for generating output signals if the actual speed is in excess of the reference speed, the output signals controlling valves (13, 14 and 15) of an air supply system (12) to a retarder of the vehicle and being arranged to operate sequentially to control progressively magnitude of power applied to the retarder if control of the vehicle is not effected to reduce speed of the engine during sequential periods of predetermined duration.
Inventors
- 👤 James Steel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 20:20
CPC Classifications
B; B60; B60T; B60T1/00; B60T1/02; B60T1/08; B60K; B60K31/00; B60K31/02; F; F02; F02B; F02B77/00; F02B77/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
Apparatus for controlling speed of an engine of a vehicle comprising means for generating first signals indicative of speed of the engine, means for comparing said first signals with a reference speed and for generating second signals when the engine speed exceeds the reference speed and control means responsive to said second signals to control retarding means of the vehicle so that, when the engine speed exceeds the reference speed, the engine speed is retarded to a level below the reference speed.
Claim 2
Dependent Claim
82 words
Apparatus for controlling speed of an engine of a vehicle comprising means for generating first signals indicative of speed of the engine, means for comparing said first signals with a reference speed and for generating second signals when the engine speed exceeds the reference speed and control means responsive to said second signals to control retarding means of the vehicle so that, when the engine speed exceeds the reference speed, the engine speed is retarded to a level below the reference speed.
Claim 3
Dependent Claim
28 words
Apparatus as claimed in Claim 1 wherein the control means includes a plurality of devices sequentially operable to control progressively magnitude of power applied to the retarding means.
Claim 4
Dependent Claim
30 words
Apparatus as claimed in Claim 2 wherein sequential operation of said devices is controlled in accordance with length of a period during which the engine speed exceeds the reference speed.
Claim 5
Dependent Claim
17 words
Apparatus as claimed in Claim 3 wherein sequential operation of said devices is controlled by timing means.
Claim 6
Dependent Claim
16 words
Apparatus as claimed in Claim 4 wherein said timing means comprises a plurality of timing devices.
Claim 7
Dependent Claim
38 words
Apparatus as claimed in Claim 5 wherein there is provided a plurality of indicating devices each associated with a corresponding one of said timing devices and each adapted to be activated on activation of a corresponding timing device.
Claim 8
Dependent Claim
19 words
Apparatus as claimed in Claim 6 wherein each said indicating means comprises apparatus for providing visual and audible signals.
Claim 9
Dependent Claim
26 words
Apparatus as claimed in any one of the preceding claims wherein the control means is controlled to release the retarding means on operation of reset means.
Claim 10
Dependent Claim
18 words
Apparatus as claimed in Claim 8 wherein the reset means is a switch included in the control means.
Claim 11
Dependent Claim
15 words
Apparatus as claimed in Claim 9 wherein the reset switch is operable by manual control.
References Cited (Backward Citations)
No citation records indexed.
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