| 摘要 |
An exhaust power recovery system for internal combustion engines. The engine exhaust gases drive a gas turbine that in turn drives a hydraulic turbine pump pressurizing a hydraulic fluid which then in turn is the driving source for a hydraulic motor which transmits power to the engine shaft. In a preferred embodiment for a turbocharged engine, the hydraulic fluid is also used as the drive fluid in a hydraulic supercharger system that provides additional supercharging at low engine speeds to supplement the exhaust driven turbocharging system. In this embodiment the pressurized hydraulic fluid for driving the supercharger hydraulic turbine is provided by a pump driven by the engine shaft. A hydraulic fluid control system is provided to match compressed air flow with engine needs. In this preferred embodiment more than enough energy is recovered from the exhaust gasses by the exhaust power recovery system to operate the hydraulic supercharger system. The horsepower of a 280 horsepower turbocharged diesel engine is increased by about 20 percent to about 335 horsepower. As to fuel efficiency, Applicant estimates that a cross country diesel truck operating 12 hours per day, 300 days per year will save between 6,000 and 10,000 pounds of fuel per year with substantial reductions in emitted pollutants.
|
