Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine
Patent
1997-11-13
2000-05-16
Kamen, Noah P.
Power plants
Fluid motor means driven by waste heat or by exhaust energy...
With supercharging means for engine
123321, F02B 3712
Patent
active
060620250
ABSTRACT:
An auxiliary brake system includes a turbocharger, including an exhaust turbine driven by exhaust gas supplied from an internal combustion engine, nozzle vanes disposed therearound at intervals for a vane-opening-degree adjustment, and an actuator for adjusting the vane opening degree; a compression-releasing engine brake unit for generating an engine brake force by discharging suction air compressed in a combustion chamber of the engine at the timing in the vicinity of compression top dead center; and an electronic control unit. This control unit actuates the engine brake unit when the engine is in a fuel-cut region, and rotates the nozzle vanes through an actuator so that the opening degree of each nozzle vane is smaller than that attained when the engine brake unit is disabled and meets an engine rotation speed. As a result, when the engine brake unit is in operation, the rotation speed of the turbine of the turbocharger increases within a range where the turbine rotation speed does not exceed a rotation speed limit, so that the supercharging degree in the turbocharger increases, whereby an engine brake action of the engine brake unit is enhanced to produce a required engine brake force, while improving the durability of the turbocharger.
REFERENCES:
patent: 4395884 (1983-08-01), Price
patent: 4932372 (1990-06-01), Meneely
patent: 5119633 (1992-06-01), Brooks et al.
patent: 5813231 (1998-09-01), Faletti et al.
Okada Seiji
Takahashi Takashi
Kamen Noah P.
Mitsubishi Jidosha Kogyo Kabushiki Kaisha
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