Turbocharged two-stroke cycle internal combustion engines

Claim 1

IN A VARIABLE SPEED COMPRESSION IGNITION ENGINE OF THE TYPE HAVING AN INTAKE MANIFOLD AND EXHAUST AND IN WHICH EXHAUST GASES FROM THE ENGINE OPERATE TO TURBINE, A SUPERCHARGING BLOWER DRIVEN BY SAID TURBINE, A POSITIVE DISPLACEMENT ENGINE DRIVEN COMPRESSOR, CONDUIT MEANS LEADING FROM SAID SUPERCHARGING BLOWER TO THE INTAKE OF SAID COMPRESSOR, FURTHER CONDUIT MEANS LEADING FROM THE DISCHARGE OF SAID COMPRESSOR TO THE MANIFOLD OF SAID ENGINE TO NORMALLY SUPPLY AIR TO SAID MANIFOLD AT A PRESSURE HIGHER THAN THAT SUPPLIED BY SAID SUPERCHARGING BLOWER, THE INPROVEMENT COMPRISING FLUID PRESSURE RESPONSIVE MEANS OPERATIVELY ASSOCIATED WITH THE INTAKE TO AND DISCHARGE FROM SAID ENGINE DRIVEN COMPRESSOR TO LIMIT THE EFFECTIVE THROUGHOUT CAPACITY AND THEREBY THE PRESSURE DIFFERENCE BETWEEN SAID INTAKE TO AND DISCHARGE FROM SAID COMPRESSOR WHEREBY THE PRESSURE AT THE DISCHRAGE CANNOT EXCEED THE PRESSURE AT THE INTAKE OF SAID COMPRESSOR BY MORE THAN A PREDETERMINED AMOUNT.