GB2024941A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Ignition system for an internal combustionengine
Assignee: Robert Bosch GmbH
•
Filing: 1979-07-06
•
Granted: —
•
Expires: 1999-07-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-11-02 02:12
CPC Classifications
F; F02; F02P; F02P3/00; F02P3/02; F02P3/04; F02P3/05; F02P3/051
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
145 words
An ignition system for an internal combustion engine, comprising a power transistor which is to be connected in series with the primary winding of an ignition coil and which acts 100 as an electronic circuit breaker, a control circuit for controlling the power transistor, a measuring resistor for detecting the current flowing through the power transistor, and a current regulator network for choking the current flowing through 105 the power transistor in dependence upon the attaining of a predetermined maximum current flowing through the measuring resistor, wherein current regulator network is arranged fully to block the power transistor when maximum current flow 110 therethrough is reached, and the current regulator network has an electronic switch for switching the power transistor into its fully conductive state, actuable in dependence upon a predetermined voltage flowing through the primary winding and 115 lying below the required igniion voltage.
Claim 2
Dependent Claim
145 words
An ignition system for an internal combustion engine, comprising a power transistor which is to be connected in series with the primary winding of an ignition coil and which acts 100 as an electronic circuit breaker, a control circuit for controlling the power transistor, a measuring resistor for detecting the current flowing through the power transistor, and a current regulator network for choking the current flowing through 105 the power transistor in dependence upon the attaining of a predetermined maximum current flowing through the measuring resistor, wherein current regulator network is arranged fully to block the power transistor when maximum current flow 110 therethrough is reached, and the current regulator network has an electronic switch for switching the power transistor into its fully conductive state, actuable in dependence upon a predetermined voltage flowing through the primary winding and 115 lying below the required igniion voltage.
Claim 3
Dependent Claim
30 words
A system as claimed in claim 1, wherein a series combination comprising a resistor and a capacitor is provided in parallel with the collector-emitter path of the power transistor. 120
Claim 4
Dependent Claim
35 words
A system as claimed in claim 1 or 2, wherein a Zener diode is provided for fixing the threshold voltage for switching the power transistor into its fully conductive state. GB 2 024 941 A
Claim 5
Dependent Claim
53 words
An ignition system substantially as and Figures 2d, e and f of the accompanying hereinbefore described with reference to Figure 1 drawings. Printed for Her Majesty's Stationery Office by the Courier Press, Leamington Spa, 1980. Published by the Patent Office, 25 Southampton Buildings, London, WC2A 1 AY, from which copies may be obtained.
Claim 6
Dependent Claim
53 words
An ignition system substantially as and Figures 2d, e and f of the accompanying hereinbefore described with reference to Figure 1 drawings. Printed for Her Majesty's Stationery Office by the Courier Press, Leamington Spa, 1980. Published by the Patent Office, 25 Southampton Buildings, London, WC2A 1 AY, from which copies may be obtained.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.