Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine
Patent
1989-03-15
1991-07-23
Hart, Douglas
Power plants
Fluid motor means driven by waste heat or by exhaust energy...
With supercharging means for engine
123 52MB, 1235591, F02B 3700, F02B 2700
Patent
active
050332686
ABSTRACT:
A turbocharged engine is provided with a waste gate valve which limits the supercharging pressure in the intake passage downstream of the compressor of the turbocharger not to exceed a predetermined value. The intake passage has first and second pressure propagating paths downstream of the compressor. The pressure wave generated by the intake stroke of the combustion chamber is propagated substantially along the first pressure propagating path when the engine operates at a speed in a low engine speed range under heavy load and substantially along the second pressure propagating path when the engine operates at a speed in a high engine speed range. The part of the intake passage defining the first pressure propagating path is arranged so that a supercharging effect by a kinetic effect of intake air which becomes maximum at a predetermined engine speed in the low engine speed range can be obtained, and the part of the intake passage defining the second pressure propagating path is arranged so that a supercharging effect by a kinetic effect of intake air is better in the high engine speed range when the pressure wave is propagated along the second pressure propagating path than when the pressure wave is propagated along the first pressure propagating path. The predetermined engine speed is lower than an intercept engine speed for the second intake path.
REFERENCES:
patent: 4300488 (1981-11-01), Cser
patent: 4829941 (1989-05-01), Hitomi et al.
patent: 4846117 (1989-07-01), Hitomi et al.
patent: 4858570 (1989-08-01), Matsumoto et al.
patent: 4889082 (1989-12-01), Hitomi et al.
Hinatase Humio
Hitomi Mitsuo
Nishikawa Toshio
Takeuti Novuo
Hart Douglas
Mazda Motor Corporation
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