US3687120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control installation for combustion engines
Assignee: Daimler Benz AG
•
Filing: 1970-06-25
•
Granted: 1972-08-29
•
Expires: 1990-06-25
Abstract
Abstract A control installation for internal combustion engines in which vacuum taken from the suction line is used for the purpose of adjusting the ignition timing in the distributor and for achieving a thrust boost at the throttle valve whereby an electric control circuit is provided which controls in dependence of influencing magnitudes of the engine, such as temperature and rotational speed, two solenoid valves that are connected in the vacuum line so that the ignition point is shifted and the thrust boost of the throttle valve is achieved.
Inventors
- 👤 Siegfried Lenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:03
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/04; F02P5/05; F02P5/10; F02P5/103; F02P5/106
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
199 words
In an internal combustion engine having adjustable throttle valve means including a throttle valve arranged in a suction line of tHe engine, distributor means having an adjustable ignition point and connecting vacuum line means connecting said adjustable throttle valve means and said distributor means to said suction line whereby the thrust boost at the throttle valve and the adjustment of the ignition point at the distributor means takes place by the vacuum taken off from the suction line, the improvement comprising a control installation including a first magnetic valve means arranged in said connecting means for controlling the application of the vacuum of said suction line to said adjustable throttle valve means, a second magnetic valve means arranged in said connecting means for controlling the application of the vacuum of said suction line to said distributor means, and electric control circuit means responsive to operating magnitudes of the engine for actuating each of said magnetic valve means independently of the actuation of the other of said magnetic valve means such that the adjustment of the ignition point at the distributor means and the adjustment of the thrust boost of the throttle valve means is achieved independently of the other.
Claim 2
Dependent Claim
199 words
In an internal combustion engine having adjustable throttle valve means including a throttle valve arranged in a suction line of tHe engine, distributor means having an adjustable ignition point and connecting vacuum line means connecting said adjustable throttle valve means and said distributor means to said suction line whereby the thrust boost at the throttle valve and the adjustment of the ignition point at the distributor means takes place by the vacuum taken off from the suction line, the improvement comprising a control installation including a first magnetic valve means arranged in said connecting means for controlling the application of the vacuum of said suction line to said adjustable throttle valve means, a second magnetic valve means arranged in said connecting means for controlling the application of the vacuum of said suction line to said distributor means, and electric control circuit means responsive to operating magnitudes of the engine for actuating each of said magnetic valve means independently of the actuation of the other of said magnetic valve means such that the adjustment of the ignition point at the distributor means and the adjustment of the thrust boost of the throttle valve means is achieved independently of the other.
Claim 3
Dependent Claim
22 words
A control installation according to claim 1, characterized in that said operating magnitudes of the engine include the temperature and rotational speed.
Claim 4
Dependent Claim
108 words
A control installation for internal combustion engines in which an adjustment of the ignition point at the distributor and a thrust boost at the throttle valve takes place by the vacuum taken off from the suction line, characterized by an electric control circuit means operable to control two magnetic valve means in dependence of engine influencing magnitudes, said magnetic valve means being arranged in vacuum line means so that the ignition point is adjusted and the thrust boost of the throttle valve is achieved, at least two thermal switch means, a rotational speed relay means and said magnetic valve means being arranged in said electric control circuit means.
Claim 5
Dependent Claim
108 words
A control installation for internal combustion engines in which an adjustment of the ignition point at the distributor and a thrust boost at the throttle valve takes place by the vacuum taken off from the suction line, characterized by an electric control circuit means operable to control two magnetic valve means in dependence of engine influencing magnitudes, said magnetic valve means being arranged in vacuum line means so that the ignition point is adjusted and the thrust boost of the throttle valve is achieved, at least two thermal switch means, a rotational speed relay means and said magnetic valve means being arranged in said electric control circuit means.
Claim 6
Dependent Claim
31 words
A control installation according to claim 3, characterized in that said thermal switch means close the circuit means within a predetermined temperature range and thereby render the installation ready for operation.
Claim 7
Dependent Claim
21 words
A control installation according to claim 4, characterized in that said temperature range is about 15* C. to about 100* C.
Claim 8
Dependent Claim
32 words
A control installation according to claim 4, characterized in that said rotational speed relay means includes at least two control switch means, each control switch means controlling a respective magnetic valve means.
Claim 9
Dependent Claim
25 words
A control installation according to claim 6, characterized in that one magnetic valve means is constructed as three-way valve means and controls the ignition timing.
Claim 10
Dependent Claim
30 words
A control installation according to claim 7, characterized in that the other magnetic valve means is constructed as two-way valve means and controls the thrust boost at the throttle valve.
Claim 11
Dependent Claim
63 words
A control installation according to claim 8, characterized in that the control switch means of the rotational speed relay means operatively connected with the three-way magnetic valve means engages the three-way magnetic valve means within a predetermined rotational speed range. 10. A control installation according to claim 9, wherein said last-mentioned rotational speed range is from n nmin to about n 2,400 rpm.
Claim 12
Dependent Claim
40 words
A control installation according to claim 9, characterized in that the control switch means of the rotational speed relay means operatively connected with the two-way magnetic valve means engages the two-way magnetic valve means within a predetermined rotational speed range.
Claim 13
Dependent Claim
25 words
A control installation according to claim 11, characterized in that said last-mentioned rotational speed range is from about n 1,800 to about n nmax rpm.
Claim 14
Dependent Claim
44 words
A control installation according to claim 11, characterized in that a vacuum box means adapted to be acted upon with vacuum on both sides thereof is provided at the distributor in the vacuum line means, which is controlled by the three-way magnetic valve means.
Claim 15
Dependent Claim
78 words
A control installation according to claim 13, characterized in that said three-way magnetic valve means includes a coil and an armature guided within said coil which is provided at both of its ends with a valve seat, and in that a respective one of two vacuum line means in operative connection with the vacuum box means is closed in the energized condition by the magnetic force and in the de-energized condition by the spring force of a spring.
Claim 16
Dependent Claim
70 words
A control installation according to claim 14, characterized in that the three-way magnetic valve means opens up in the energized condition the vacuum line means to the side of the vacuum box means which brings about a retardation of the timing whereas in the de-energized condition, it correspondingly opens up the vacuum line means to the side of the vacuum box means which effects an advance of the ignition point.
Claim 17
Dependent Claim
19 words
A control installation according to claim 15, characterized in that said influencing magnitudes include the temperature and rotational speed.
Claim 18
Dependent Claim
32 words
A control installation according to claim 3, characterized in that said rotational speed relay means includes at least two control switch means, each control switch means controlling a respective magnetic valve means.
Claim 19
Dependent Claim
25 words
A control installation according to claim 1, characterized in that one magnetic valve means is constructed as three-way valve means and controls the ignition timing.
Claim 20
Dependent Claim
29 words
A control installation according to claim 1, characterized in that one magnetic valve means is constructed as two-way valve means and controls the thrust boost at the throttle valve.
Claim 21
Dependent Claim
53 words
A control installation according to claim 18, characterized in that the electric circuit means includes rotational speed relay means having control switch means, the control switch means of the rotational speed relay means operatively connected with the three-way magnetic valve means engages the three-way magnetic valve means within a predetermined rotational speed range.
Claim 22
Dependent Claim
22 words
A control installation according to claim 20, wherein said last-mentioned rotational speed range is from n nmin to n 2, 400 rpm.
Claim 23
Dependent Claim
53 words
A control installation according to claim 19, characterized in that the electric circuit means includes rotational speed relay means having control switch means, the control switch means of the rotational speed relay means operatively connected with the two-way magnetic valve means engages the two-way magnetic valve means within a predetermined rotational speed range.
Claim 24
Dependent Claim
25 words
A control installation according to claim 22, characterized in that said last-mentioned rotational speed range is from about n 1,800 to about n nmax rpm.
Claim 25
Dependent Claim
44 words
A control installation according to claim 18, characterized in that a vacuum box means adapted to be acted upon with vacuum on both sides thereof is provided at the distributor in the vacuum line means, which is controlled by the three-way magnetic valve means.
Claim 26
Dependent Claim
78 words
A control installation according to claim 24, characterized in that said three-way magnetic valve means includes a coil and an armature guided within said coil which is provided at both of its ends with a valve seat, and in that a respective one of two vacuum line means in operative connection with the vacuum box means is closed in the energized condition by the magnetic force and in the de-energized condition by the spring force of a spring.
Claim 27
Dependent Claim
70 words
A control installation according to claim 24, characterized in that the three-way magnetic valve means opens up in the energized condition the vacuum line means to the side of the vacuum box means which brings about a retardation of the timing whereas in the de-energized condition, it correspondingly opens up the vacuum line means to the side of the vacuum box means which effects an advance of the ignition point.
References Cited (Backward Citations)
US1761513A
Cited
DE634298C
Cited
US3027884A
Cited
US3301242A
Cited
US3272191A
Cited
US3547089A
Cited
US3559666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |