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Turbochargers with Hydraulic Assist
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English
Abstract
This paper provides design and test data on a crankshaft driven hydraulic system for adding auxiliary energy to the compressor power input of an exhaust gas turbocharger during truck engine acceleration under load, or during heavy “lug-down” operation. The system is applicable to 2 or 4 stroke engines. With a 2 stroke engine the system allows the turbocharger to replace the conventional crankshaft driven scavenge blower even at start-up.
Critical exhaust smoke is significantly reduced both in intensity and in duration, and the engine rev/min at which peak torque occurs can be lowered by 10 to 15% of the speed range.
The hydraulic system comprises a high pressure gear type pump which is driven from the engine crankshaft, through a suitable clutch, and transfers energy to the turbocharger shaft by way of a simple nozzle jetting engine sump oil, at high velocity, on to the buckets of a miniature Pelton wheel turbine, about 35 to 50 mm in diameter.
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Citation
Timoney, S., "Turbochargers with Hydraulic Assist," SAE Technical Paper 830012, 1983, https://doi.org/10.4271/830012.Also In
References
- Buchi A.J. “Exhaust turbocharging of internal combustion engines” Monograph No. 1 1953 Franklin Institute
- Tryhorn D.W. “Turbocharging the automotive two stroke cycle engine” Proc. Inst. Mech. Engrs 1965-66 180 (Pt 3N) 75
- Timoney S.G. “Diesel design for turbocharging” S.A.E. Int. Automotive Engineering Congress Detroit 1965 Paper No. 952 B
- Vincent E.T. “The Modern compound engine” S.A.E. Automotive Engineering Congress Detroit 1966 Paper 660131
- Witsky J. Meriwether R. Lux F. “Piston-Turbine-Compound Engine Analysis” S.A.E. West Coast Meeting Vancouver 1965 Paper 650632
- Wallace F.J. “Performance of two stroke engines in combination with compressors and turbines” Proc. Inst. Mech. Engrs 1963 177 43
- Sammons H. Chatterton E. “Napier Nomad aircraft Diesel engine” S.A.E. Trans 1955 63 107
- Ephraim M. Williams H.A. “A look at a modern two cycle Diesel engine” Proc. ASME 1968
- Ledger J.D. Benson R.S. Furukawa H. “Performance characteristics of a centrifugal compressor with air injection” Proc. Inst. Mech. Engrs 1973 187 35 73
- Timoney S.G. “An auxiliary system for turbocharged engines and its application to the K.60 engine” Report to British Ministry of Defence, Contract No. A-CTS-FV-7205-AC11