Patent US3620195A successfully refreshed from Google Patents.
US3620195A
Expired / Lapsed
US
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Rotary piston injection-type internal combustion engine
Assignee: Daimler Benz AG
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Filing: 1969-11-12
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Granted: 1971-11-16
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Expires: 1989-11-12
Abstract
Abstract A rotary piston injection-type internal combustion engine, especially of trochoidal type of construction in which a throttle valve mounted on a throttle valve shaft is arranged in the inlet channel to control the amount of combustion air flowing through the inlet channel; the throttle valve and/or the throttle valve shaft are provided with one or several bores for the flow of combustion air through the same when the throttle valve is in the closed or partially open position.
Inventors
- 👤 Heinz Lamm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:10
CPC Classifications
F; F02; F02B; F02B53/00; F02B53/04; F02B53/06; F02B2053/005; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
159 words
A rotary piston injection-type internAl combustion engine of trochoidal construction with an inlet channel adjoining an exhaust channel within the casing in the direction of normal rotation of a polygonal piston and with a control means arranged in the inlet channel and controlling the quantity of combustion air and provided with an idling channel means bypassing said control means and accommodating the flow of a portion of the combustion air during normal operation of the engine in the forward direction, characterized in that at least one bore is provided in the control means which is open in both directions of flow and which is disposed substantially in the direction of the inlet channel means with a closed control means to provide a turbulence of air downstream of the closed control means offsetting the stratification otherwise produced by the air flowing through the idling channel means and by the exhaust gases overflowing into the inlet channel from the outlet channel.
Claim 2
Dependent Claim
159 words
A rotary piston injection-type internAl combustion engine of trochoidal construction with an inlet channel adjoining an exhaust channel within the casing in the direction of normal rotation of a polygonal piston and with a control means arranged in the inlet channel and controlling the quantity of combustion air and provided with an idling channel means bypassing said control means and accommodating the flow of a portion of the combustion air during normal operation of the engine in the forward direction, characterized in that at least one bore is provided in the control means which is open in both directions of flow and which is disposed substantially in the direction of the inlet channel means with a closed control means to provide a turbulence of air downstream of the closed control means offsetting the stratification otherwise produced by the air flowing through the idling channel means and by the exhaust gases overflowing into the inlet channel from the outlet channel.
Claim 3
Dependent Claim
20 words
A rotary piston internal combustion engine according to claim 1, characterized in that said idling channel means includes regulating means.
Claim 4
Dependent Claim
122 words
A rotary piston internal combustion engine of trochoidal construction with fuel injection, which includes a housing casing with an inlet channel and an exhaust channel and a control means arranged in the inlet channel and controlling the quantity of combustion air and provided with an idling channel means bypassing said control means, characterized in that at least one bore is provided in the control means which is disposed substantially in the direction of the inlet channel means with a closed control means, and in that said idling channel means includes regulating means for adjusting the amount of idling air flowing therethrough in addition to the idling air flowing through said bore whereby a strong turbulence downstream of the control means is produced.
Claim 5
Dependent Claim
122 words
A rotary piston internal combustion engine of trochoidal construction with fuel injection, which includes a housing casing with an inlet channel and an exhaust channel and a control means arranged in the inlet channel and controlling the quantity of combustion air and provided with an idling channel means bypassing said control means, characterized in that at least one bore is provided in the control means which is disposed substantially in the direction of the inlet channel means with a closed control means, and in that said idling channel means includes regulating means for adjusting the amount of idling air flowing therethrough in addition to the idling air flowing through said bore whereby a strong turbulence downstream of the control means is produced.
Claim 6
Dependent Claim
46 words
An internal combustion engine according to claim 3, with a throttle valve arranged on a throttle valve shaft as control means, characterized in that at least one bore is arranged in one of the two parts consisting of the throttle valve and the throttle valve shaft.
Claim 7
Dependent Claim
22 words
An internal combustion engine according to claim 4, characterized in that at least one bore is arranged in the throttle valve shaft.
Claim 8
Dependent Claim
20 words
An internal combustion engine according to claim 5, characterized in that several bores are provided in the throttle valve shaft.
Claim 9
Dependent Claim
21 words
An internal combustion engine according to claim 4, characterized in that at least one bore is provided in the throttle valve.
Claim 10
Dependent Claim
19 words
An internal combustion engine according to claim 7, characterized in that several bores are provided in the throttle valve.
Claim 11
Dependent Claim
22 words
An internal combustion engine according to claim 8, characterized in that at least one bore is arranged in the throttle valve shaft.
Claim 12
Dependent Claim
20 words
An internal combustion engine according to claim 8, characterized in that several bores are provided in the throttle valve shaft.
Claim 13
Dependent Claim
27 words
An internal combustion engine according to claim 10, characterized in that the bores are arranged in proximity to the center longitudinal axis through the inlet channel means.
Claim 14
Dependent Claim
44 words
An internal combustion engine according to claim 11, characterized in that the entire cross section of all bores is so dimensioned that in relation to the combustion air flowing through the idling channel means, the largest portion of combustion air flows through the bores.
Claim 15
Dependent Claim
30 words
An internal combustion engine according to claim 12, wherein the proportion of combustion air flowing through the bores is of the order of 80 percent of the entire idling quantity.
Claim 16
Dependent Claim
27 words
An internal combustion engine according to claim 4, characterized in that the bores are arranged in proximity to the center longitudinal axis through the inlet channel means.
Claim 17
Dependent Claim
44 words
An internal combustion engine according to claim 4, characterized in that the entire cross section of all bores is so dimensioned that in relation to the combustion air flowing through the idling channel means, the largest portion of combustion air fLows through the bores.
Claim 18
Dependent Claim
30 words
An internal combustion engine according to claim 15, wherein the proportion of combustion air flowing through the bores is of the order of 80 percent of the entire idling quantity.
Claim 19
Dependent Claim
24 words
An internal combustion engine according to claim 1, characterized by fuel injection means injection fuel into the inlet channel downstream of the control means.
Claim 20
Dependent Claim
43 words
An internal combustion engine according to claim 17, characterized in that said fuel is injected substantially transversely to the axis of the inlet channel and in a direction substantially opposite to the direction of rotation of a piston rotating within the housing casing.
Claim 21
Dependent Claim
29 words
An internal combustion engine according to claim 1, characterized by fuel injection means for injecting fuel into the air turbulence downstream of the control means in said inlet channel.
Claim 22
Dependent Claim
41 words
An internal combustion engine according to claim 19, wherein the fuel is injected substantially transversely to the axis of the inlet channel and in a direction substantially opposite to the direction of rotation of a piston rotating within said housing casing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |