Air separator for low flow rate cooling systems

Internal-combustion engines – Cooling

Reexamination Certificate

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Details

C123S041310, C123S14250E, C237S01230B, C180S065230, C165S041000

Reexamination Certificate

active

07395787

ABSTRACT:
An air separator for low flow rate coolant systems which removes air from the liquid coolant thereof. The air separator is a closed canister having a bottom wall, a top wall at a gravitationally high location with respect to the bottom wall, and a sidewall sealingly therebetween. A coolant inlet is at the sidewall, a pump outlet is at the bottom wall and a coolant reservoir outlet is at the top wall. The coolant reservoir outlet is connected to a coolant reservoir gravitationally elevated with respect to the canister. A much larger cross-sectional area per unit length of the canister relative to the piping results in a coolant dwell time in the canister that encourages coolant air bubbles to migrate toward the coolant reservoir.

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Lexus 400h Service Manual, Section on Cooling System for Inverter, MG1 and MG2, of Toyota Motor Corporation, Toyota City, Japan, 3 pages (2006—similar to Toyota Prius 2004).

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