US3914944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine, especially for air compressing injection engine
Assignee: Daimler Benz AG
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Filing: 1974-05-22
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Granted: 1975-10-28
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Expires: 1994-05-22
Abstract
Abstract An internal combustion engine, particularly an air-compressing injection internal combustion engine which includes an exhaust gas turbocharger and a by-pass line for the return of exhaust gases from the exhaust gas line to the inlet side of the engine; the by-pass line is thereby connected, on the one hand, to the exhaust gas line between the internal combustion engine and the exhaust gas turbine and, on the other, to the inlet line between the supercharger and the internal combustion engine.
Inventors
- 👤 Hans-Georg Schmidt
- 👤 Detlef Panten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:06
CPC Classifications
F; F02; F02B; F02B47/00; F02B47/04; F02B47/08; F02B37/00; F02M; F02M26/00; F02M26/02; F02M26/04; F02M26/05; F02M26/06; F02B29/00; F02B29/04; F02B29/0406; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
170 words
An internal combustion engine with an inlet line and an exhaust gas line, the engine includes a supercharger means and an exhaust gas turbocharger means, characterized in that a by-pass line means is provided for the return of at least a portion of exhaust gases to the inlet line, one end of the by-pass line means is operatively connected with the exhaust gas line intermediate the internal combustion engine and the gas turbocharger means, the other end of the by-pass line means is operatively connected with the inlet line intermediate the supercharger means and the internal combustion engine, a check valve means is arranged in the by-pass line means which opens in the direction toward the inlet line, an additional line is provided for connecting the exhaust gas line with the supercharger means, a further check valve means is arranged in the additional line which opens in the direction toward the supercharger means, the additional line is connected with the exhaust gas line downstream of the exhaust gas turbocharger means.
Claim 2
Dependent Claim
170 words
An internal combustion engine with an inlet line and an exhaust gas line, the engine includes a supercharger means and an exhaust gas turbocharger means, characterized in that a by-pass line means is provided for the return of at least a portion of exhaust gases to the inlet line, one end of the by-pass line means is operatively connected with the exhaust gas line intermediate the internal combustion engine and the gas turbocharger means, the other end of the by-pass line means is operatively connected with the inlet line intermediate the supercharger means and the internal combustion engine, a check valve means is arranged in the by-pass line means which opens in the direction toward the inlet line, an additional line is provided for connecting the exhaust gas line with the supercharger means, a further check valve means is arranged in the additional line which opens in the direction toward the supercharger means, the additional line is connected with the exhaust gas line downstream of the exhaust gas turbocharger means.
Claim 3
Dependent Claim
20 words
An internal combustion engine according to claim 1, characterized in that the engine is an air-compressing injection-type internal combustion engine.
Claim 4
Dependent Claim
71 words
An internal combustion engine according to claim 1, characterized in that the cross sections of the by-pass line means and of the supercharger means are so matched to one another that an automatic control effect is achieved in that the pressures in the exhaust gas in the supercharged air are so matched to one another that at low loads larger quantities of exhaust gases are conducted back to the inlet side.
Claim 5
Dependent Claim
43 words
An internal combustion engine according to claim 1, characterized in that larger quantities of exhaust gases are conducted back through the by-pass line means up to a point at which the pressure in the supercharged air is higher than in the exhaust gases.
Claim 6
Dependent Claim
257 words
An internal combustion engine with an inlet line and an exhaust line, which includes an exhaust gas turbocharger means and which operates with return of a portion of the exhaust gases to the inlet side of the internal combustion engine, characterized in that a by-pass line means is provided for the return of exhaust gases which is operatively connected, on the one hand, with the exhaust gas line intermediate the internal combustion engine and the turbocharger means and, on the other, to the inlet line intermediate a supercharger means and internal combustion engine, the cross sections of the by-pass line means and of the supercharger means are so matched to one another that an automatic control effect is achieved in that the pressures in the exhaust gas in the supercharged air are so matched to one another that at low loads larger quantities of exhaust gases are conducted back to the inlet side, the larger quantities of exhaust gases are conducted back through the by-pass line means up to a point at which the pressure in the supercharged air is higher than in the exhaust gases, an additional line is provided connecting the exhaust gas line with the supercharger means, in which is arranged a check valve means, a spring means keeping the check valve means closed, the prestress of the sprIng means being matched to the suction pressure of the supercharger means in such a manner that the flow of exhaust gases through the additional line is controlled by the suction pressure of the supercharger means.
Claim 7
Dependent Claim
257 words
An internal combustion engine with an inlet line and an exhaust line, which includes an exhaust gas turbocharger means and which operates with return of a portion of the exhaust gases to the inlet side of the internal combustion engine, characterized in that a by-pass line means is provided for the return of exhaust gases which is operatively connected, on the one hand, with the exhaust gas line intermediate the internal combustion engine and the turbocharger means and, on the other, to the inlet line intermediate a supercharger means and internal combustion engine, the cross sections of the by-pass line means and of the supercharger means are so matched to one another that an automatic control effect is achieved in that the pressures in the exhaust gas in the supercharged air are so matched to one another that at low loads larger quantities of exhaust gases are conducted back to the inlet side, the larger quantities of exhaust gases are conducted back through the by-pass line means up to a point at which the pressure in the supercharged air is higher than in the exhaust gases, an additional line is provided connecting the exhaust gas line with the supercharger means, in which is arranged a check valve means, a spring means keeping the check valve means closed, the prestress of the sprIng means being matched to the suction pressure of the supercharger means in such a manner that the flow of exhaust gases through the additional line is controlled by the suction pressure of the supercharger means.
Claim 8
Dependent Claim
26 words
An internal combustion engine according to claim 5, characterized in that the additional line is connected with the exhaust gas line upstream of the turbine means.
Claim 9
Dependent Claim
26 words
An internal combustion engine according to claim 5, characterized in that the additional line is connected with the exhaust gas line downstream of the turbine means.
Claim 10
Dependent Claim
165 words
An internal combustion engine with an inlet line and an exhaust line, which includes an exhaust gas turbocharger means and which operates with return of a portion of the exhaust gases to the inlet side of the internal combustion engine, characterized in that a by-pass line means is provided for the return of exhaust gases which is operatively connected, on the one hand, with the exhaust gas line intermediate the internal combustion engine and the turbocharger means and, on the other, to the inlet line intermediate a supercharger means and internal combustion engine, an additional line is provided for connecting the exhaust gas line with the supercharger means, in which is arranged a check valve means, a spring means keeping the check valve means closed, the prestress of the spring means being matched to the suction pressure of the supercharger means in such a manner that the flow of exhaust gases through the additional line is controlled by the suction pressure of the supercharger means.
Claim 11
Dependent Claim
165 words
An internal combustion engine with an inlet line and an exhaust line, which includes an exhaust gas turbocharger means and which operates with return of a portion of the exhaust gases to the inlet side of the internal combustion engine, characterized in that a by-pass line means is provided for the return of exhaust gases which is operatively connected, on the one hand, with the exhaust gas line intermediate the internal combustion engine and the turbocharger means and, on the other, to the inlet line intermediate a supercharger means and internal combustion engine, an additional line is provided for connecting the exhaust gas line with the supercharger means, in which is arranged a check valve means, a spring means keeping the check valve means closed, the prestress of the spring means being matched to the suction pressure of the supercharger means in such a manner that the flow of exhaust gases through the additional line is controlled by the suction pressure of the supercharger means.
References Cited (Backward Citations)
US2633698A
Cited
US3149454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |