Piston internal combustion engine with two-stage supercharging
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United States of America Patent
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Jun 28, 1988
Grant Date -
N/A
app pub date -
Mar 4, 1987
filing date -
Mar 8, 1986
priority date (Note) -
Expired
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Abstract
A piston internal combustion engine with two-stage supercharging in which two exhaust gas turbocharger groups consisting each of a high pressure and low pressure exhaust gas turbocharger, supply the piston internal combustion engine with charging air. One exhaust gas turbocharger group is constructed to be connected and disconnected, whereby a closure device is arranged in the exhaust gas line of the high pressure exhaust gas turbocharger and a check valve is arranged in the suction line of the low pressure exhaust gas turbocharger. For connecting and disconnecting the exhaust gas turbocharger group at partial load, the cross section of the closure devices is controlled. In order to avoid nonpermissive excess rotational speeds in the rotating parts of the high pressure exhaust gas turbocharger during a connecting operation, charging air is conducted back from the pressure side to the suction side by way of a controllable bypass line between the suction and pressure line of the high pressure compressor. The bypass line is controlled by a further closure device in dependence on the opening of the charging air closure device.
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Patent Owner(s)
Patent Owner | Address | |
---|---|---|
MTU MOTOREN- UND TURBINEN-UNION FRIEDRICHSHAFEN GMBH | D-88040 FRIEDRICHSHAFEN |
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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Deutschmann, Herbert | Friedrichshafen, DE | 24 | 317 |
Ruetz, Georg | Immenstaad, DE | 17 | 229 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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