Internal combustion engine of an automotive vehicle with a heat storage device that provides reusable heat
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United States of America Patent
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Oct 21, 2014
Issued Date -
N/A
app pub date -
Oct 19, 2012
filing date -
Oct 20, 2011
priority date (Note) -
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Abstract
A heat storage device keeps engine coolant hot during operating pauses of the engine allowing quick heating during a cold start of the engine. The capacity of the heat storage device for coolant is twice as large as the capacity for coolant of the coolant circulation system and the engine. An inflow line, an outflow line and a ventilation line pass through the bottom of the heat storage device and are heat insulated on the inside of the heat storage device. Hot coolant from the heat storage device is transferred in two portions into the cold engine. The second portion is transferred when the rising temperature of the metal motor mass has come close to the falling temperature of the first portion of coolant that was circulating in the engine. The heat storage device includes outer and inner containers with a high vacuum in the insulating space between the containers.
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