US 10,859,153 B2Granted

Thermal transmission management strategy

AssigneeGM Global Technology Operations LLC

InventorsEugene V. Gonze, John W. Myers, Daniel J. Shepard, Michael J. Paratore, Jr., Richard J. Lopez

Life of this patent

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Abstract

A vehicle thermal management system includes a radiator receiving a liquid coolant in a coolant supply line and discharging the coolant into a coolant pump supply line. A coolant pump receives the coolant from the coolant pump supply line and discharges the coolant into multiple engine components. A transmission oil heat exchanger defining a first transmission oil heat exchanger receives the coolant after being discharged from the multiple engine components. An air-to-coolant sub-cooling heat exchanger defines a second transmission oil heat exchanger. The sub-cooling heat exchanger receives a portion of the coolant bypassing the multiple engine components.

Claims16

Dependent claims

A vehicle thermal management system, comprising:

a radiator receiving a coolant in a coolant supply line and discharging the coolant into a coolant pump supply line;
a coolant pump receiving the coolant from the coolant pump supply line and discharging the coolant into multiple engine components;
a transmission coolant-to-oil oil heat exchanger defining a first transmission oil heat exchanger receiving the coolant after being discharged from the multiple engine components;
an air-to-coolant sub-cooling heat exchanger defining a second transmission oil heat exchanger, the sub-cooling heat exchanger receiving a portion of the coolant bypassing the multiple engine components;
and
a coolant control valve to control sub-cooling coolant flow to the sub-cooling heat exchanger, wherein the coolant control valve includes:
an engine rotary valve;
an oil rotary valve distributing at least one of the coolant received in the coolant control valve and from the sub-cooling heat exchanger;
and
a radiator rotary valve distributing the coolant received in the coolant control valve back to the radiator or to an oil rotary valve.

7 more elements

A vehicle thermal management system, comprising:

a radiator receiving a liquid coolant from a coolant supply line and discharging the coolant into a coolant pump supply line;
a coolant pump receiving the coolant from the coolant pump supply line and discharging a first portion of the coolant into multiple engine components;
a coolant control valve receiving the first portion of the coolant discharged from the multiple engine components;
a transmission oil heat exchanger defining a first transmission oil heat exchanger in communication with the coolant control valve and receiving the first portion of the coolant after being discharged from the multiple engine components;
and
an air-to-coolant sub-cooling heat exchanger defining a second transmission oil heat exchanger, the sub-cooling heat exchanger receiving a second portion of the coolant bypassing the multiple engine components, the sub-cooling heat exchanger further cooling the second portion of the coolant to provide the second portion of the coolant at a lower temperature than engine setpoints for cooling a transmission oil, the sub-cooling heat exchanger discharging the second portion of the coolant into the coolant control valve for selective distribution into the transmission oil heat exchanger;
and
wherein the coolant control valve controls a sub-cooling coolant flow to the sub-cooling heat exchanger and includes:
an engine rotary valve receiving coolant discharged from the multiple engine components;
a radiator rotary valve distributing at least one of the coolant received from the engine rotary valve and the multiple engine components back to the radiator;
and
an oil rotary valve distributing the coolant received from the radiator rotary valve and from the sub-cooling heat exchanger.

9 more elements

A vehicle thermal management system, comprising:

a radiator receiving a coolant from a coolant supply line and discharging the coolant into a coolant pump supply line;
a coolant pump receiving the coolant from the coolant pump supply line and discharging a first portion of the coolant into multiple engine components;
a coolant control valve receiving the first portion of the coolant discharged from the multiple engine components;
a transmission oil heat exchanger defining a first transmission oil heat exchanger in communication with the coolant control valve and receiving the first portion of the coolant after being discharged from the multiple engine components;
an air-to-coolant sub-cooling heat exchanger defining a second transmission oil heat exchanger, the sub-cooling heat exchanger receiving a second portion of the coolant bypassing the multiple engine components, the sub-cooling heat exchanger further cooling the second portion of the coolant to provide the second portion of the coolant at a lower temperature than engine setpoints to cool a transmission oil;
and
a radiator fan, wherein conditions for operation of the radiator fan are based on optimized heat transmission including application of physics-based requirements for the sub-cooling heat exchanger;
wherein the coolant control valve includes:
an engine rotary valve receiving coolant discharged from the multiple engine components;
a radiator rotary valve distributing at least one of the coolant received from the engine rotary valve and the multiple engine components back to the radiator;
and
an oil rotary valve distributing the coolant received from the radiator rotary valve and from the sub-cooling heat exchanger.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/279,225Filed 19 Feb 2019
Published: US 2020/0263783 A120 Aug 2020
Granted: 8 Dec 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification24 codes

F01P 3/02
Liquid cooling: arrangements for cooling cylinders or cylinder heads
F16H 57/0475
Elements of gearings to be lubricated, cooled or heated: engine and gearing, i.e. joint lubrication or cooling or heating thereof
F01P 3/20
Liquid cooling: cooling circuits not specific to a single part of engine or machine
F01P 5/02
Pumping cooling-air or liquid coolants: pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers