Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine
Patent
1985-03-15
1986-12-23
Koczo, Michael
Power plants
Fluid motor means driven by waste heat or by exhaust energy...
With supercharging means for engine
137339, 251 64, F02B 3700
Patent
active
046304452
ABSTRACT:
The disclosure illustrates a wastegate valve for an internal combustion engine turbocharger comprising a valve head carried by a valve stem and arranged to cooperate with a valve seat in a bypass passage, the valve stem being mounted in a valve guide for movement between a position in which the valve head and valve seat cooperate to close the valve and a position in which the valve head is spaced from the valve seat. A shield formed from a cup shaped thin wall pressing is provided at least partly surrounding the valve stem in a region thereof exposed to heat from the exhaust gases, the shield being disposed so as to deflect hot exhaust gases away from that part of the stem surrounded by the shield. Passageways are provided for conducting a flow of cooling fluid to said valve stem in between a pair of spaced valve guide inserts in at least part of the region surrounded by the shield.
REFERENCES:
patent: 2112045 (1938-03-01), Puffer
patent: 3270951 (1966-09-01), Reed
patent: 3799139 (1974-03-01), Kuhn
patent: 4075849 (1978-02-01), Richardson
patent: 4250710 (1981-02-01), Matsuoka et al.
Gron Gary M.
Holset Engineering Company Limited
Koczo Michael
Ruff Robert T.
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