Power plants – Fluid motor means driven by waste heat or by exhaust energy... – With supercharging means for engine
Patent
1995-05-12
1997-02-04
Koczo, Michael
Power plants
Fluid motor means driven by waste heat or by exhaust energy...
With supercharging means for engine
F02B 2904
Patent
active
055987052
ABSTRACT:
An internal combustion engine, such as a diesel engine for a diesel electric locomotive, is provided with a turbocharger having an aftercooler. A cooling apparatus for the engine is provided with a main coolant loop having a pump and a radiator and an aftercooler coolant loop having a pump and a radiator. The coolant temperature in the aftercooler coolant loop is maintained lower than the coolant temperature in the main coolant loop when the coolant flows of the main and aftercooler coolant loops are maintained separate. Linking conduits are provided from a point in the aftercooler coolant loop to a point of lower pressure in the main coolant loop and from a point in the main coolant loop to a point of lower pressure in the aftercooler coolant loop; and valve apparatus in at least one of the linking conduits is activatable by a control in response to an engine operation related parameter between a first condition preventing coolant flow therethrough so as to maintain coolant flows in the main and aftercooler coolant loops separate and a second condition allowing coolant flow therethrough so as to allow mixing of coolant between the main and aftercooler coolant loops. Activation of the valve apparatus thus provides a shift in the cooling capacity of the cooling apparatus between the main and aftercooler coolant loops.
REFERENCES:
patent: 3397684 (1968-08-01), Scherenberg
patent: 4061187 (1977-12-01), Rajasekaran et al.
patent: 4325219 (1982-04-01), Stang et al.
patent: 4961404 (1990-10-01), Itakura et al.
patent: 5353757 (1994-10-01), Susa et al.
patent: 5392741 (1995-02-01), Uzkan
General Motors Corporation
Koczo Michael
Sigler Robert M.
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