GB525635A - Improvements in or relating to electrical apparatus for indicating the conditions inthe cylinders of internal combustion engines - Google Patents
Improvements in or relating to electrical apparatus for indicating the conditions inthe cylinders of internal combustion enginesInfo
- Publication number
- GB525635A GB525635A GB614439A GB614439A GB525635A GB 525635 A GB525635 A GB 525635A GB 614439 A GB614439 A GB 614439A GB 614439 A GB614439 A GB 614439A GB 525635 A GB525635 A GB 525635A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spark
- current
- meter
- gap
- sparking plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
- G01L23/22—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
- G01L23/221—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines for detecting or indicating knocks in internal combustion engines
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
525,635. Determining physical qualities of materials. NAPIER & SON, Ltd., D., and RAMSAY, F. R. F. Feb. 24, 1939, No. 6144. [Class 37] Apparatus for indicating conditions in the cylinders of internal combustion engines comprises means for passing a current between the points of the sparking plug and measuring this current, without interfering with the normal working of the sparking plug. An auxiliary gap A, preferably of the quenched type, is connected in series with the lead to the sparking plug B from the magneto C. Across the sparking plug points is connected a circuit comprising a rectifier D, a high resistance E, a direct-current meter F, and a battery G. The rectifier D opposes the passage of the spark voltage through the meter circuit but allows current from the battery G to pass. A resistance H may be connected between the gap A and the sparking plug B to assist in quenching the spark and preventing high-frequency oscilla' tions. An electrolytic condenser may be connected in parallel with the meter F to provide additional damping and a variable shunt resistance may be employed to vary its scale. A diode or other rectifier may be connected in the lead from the ignition apparatus C instead of or in addition to the series spark gap A. A high resistance may be used in place of the valve, or a series condenser in place of the gap. The current through the meter F is an indication of the richness of the mixture, maximum current corresponding to the condition for maximum power. Heavy detonation causes a small rise of current. In a modification a high-frequency spark is employed and is prevented from passing through the meter circuit by a high resistance or high frequency choke. The spark may be produced by means of a series gap having one electrode connected to the ignition apparatus and the other electrode connected through a high frequency coil to earth and through a condenser to the sparking plug. In another modification the meter and battery are connected in series with the lead to the ignition apparatus, the circuit including a high-frequency choke and being shunted by a condenser or spark gap to filter the spark impulses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB614439A GB525635A (en) | 1939-02-24 | 1939-02-24 | Improvements in or relating to electrical apparatus for indicating the conditions inthe cylinders of internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB614439A GB525635A (en) | 1939-02-24 | 1939-02-24 | Improvements in or relating to electrical apparatus for indicating the conditions inthe cylinders of internal combustion engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB525635A true GB525635A (en) | 1940-09-02 |
Family
ID=9809211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB614439A Expired GB525635A (en) | 1939-02-24 | 1939-02-24 | Improvements in or relating to electrical apparatus for indicating the conditions inthe cylinders of internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB525635A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2142086A (en) * | 1983-06-23 | 1985-01-09 | Ford Motor Co | Engine control systems |
-
1939
- 1939-02-24 GB GB614439A patent/GB525635A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2142086A (en) * | 1983-06-23 | 1985-01-09 | Ford Motor Co | Engine control systems |
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