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A High Power, Wide Torque Range, Efficient Engine with a Newly Developed Variable Geometry Turbocharger
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Abstract
A turbocharger which has four pairs of fixed vanes and movable vanes inside the turbine scroll was developed. A 1.2-liter experimental gasoline engine with this turbocharger was made and mounted in the body of a passenger car. This variable-geometry mechanism did not need a waste-gate system. Results of bench tests showed that this engine generated a 93.3 kPa (700 mmHg) boost pressure over a 6,000 rpm range. This paper presents the mechanism, operation, and performance data of this variable-geometry turbocharger, as well as the performance data of the 1.2-liter experimental engine and this passenger car.
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Inoue, K., Kubota, O., Kishi, N., and Yano, S., "A High Power, Wide Torque Range, Efficient Engine with a Newly Developed Variable Geometry Turbocharger," SAE Technical Paper 890457, 1989, https://doi.org/10.4271/890457.Also In
References
- John R. Arvin Norbert L. Osborn “Design Feature and Operation Experiences of the Aerodyne Dallas VATN Turbocharger” SAE Paper 830013 1983
- Hishikawa Akira Okazaki Yoichiro Busch Paul “Developments of Variable Area Radial Turbines for Small Turbochargers” SAE Paper 880120 1988
- Richard R. Lundstrom “A Comparison of Transient Vehicle Performance Using a Fixed Geometry, Wastegated Turbocharger and a Variable Geometry Turbocharger” SAE Paper 860104 1986
- Gerard F. O'connor Michael M. Smith “Variable Nozzle Turbochargers for Passenger Car Applications” SAE Paper 880121 1988
- Robert P Larsen. “Measuring the Benefits and Costs of Ceramic Turbochargers: The Perspective from the Driver's Seat” SAE Paper 861129 1986
- Inoue Kazuo et al. “A High Power, Wide Torque Range and Efficient Engine with a Newly Developed Variable Valve Lift and Timing Mechanism” SAE International Congress and Exposition 1989