The Volvo-Turbo Experimental Gas Turbine

Kronogard, S. O.

doi:10.1115/62-gtp-8

Cited by 10 publications

(1 citation statement)

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“…In none of these cycles was a major improvement in torque characteristic Obtained; thus the transmission problem remains. A system which has been developed experimentally and which aims solely at improving this feature is the dual power turbine system, Fig.l(e) (5). Two contrarotating power turbine rotors are linked through an epicyclic gear and freewheel arrangement; a large increase in torque ratio is obtained at the expense of a certain drop in efficiency.…”

Section: Fig 2 Schematic Layout 3s-cyclementioning

confidence: 99%

A 3-Shaft Gas Turbine to Meet Automotive Requirements

Collet¹

1967

ASME 1967 Gas Turbine Conference and Products Show

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At present the regenerative, low-pressure, 2-shaft gas turbine seems to be the generally accepted cycle layout for automotive applications. The performance of such an arrangement in its simplest form is assessed with regard to sfc (especially at part load), engine response, torque characteristics, and engine braking capability. The application of variable geometry, e.g., movable power-turbine nozzles, can be used to reduce part-load sfc in addition to providing engine braking. A more drastic approach towards improving performance to meet automotive requirements is described in this paper. The addition of a “turbocharger,” two freewheels, and variable high-pressure turbine nozzles results in an increased specific output, decreased fuel consumption, a higher torque ratio permitting a simplified transmission, and a major braking capability. Significant features of this 3-shaft arrangement include the retention of a comparatively low design pressure ratio and a novel method of maintaining adequate engine response.

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Section: Fig 2 Schematic Layout 3s-cyclementioning

confidence: 99%