US 11,441,475 B2Granted

Cooling system

AssigneeToyota Jidosha Kabushiki Kaisha

InventorHiroyuki Sugihara

Life of this patent

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Abstract

A cooling system of a hybrid vehicle includes a radiator, an openable and closable first shutter, an openable and closable second shutter, and a control device. The radiator is placed forward of an internal combustion engine and a heat generation device configured to generate heat along with operation of the drive motor, and the radiator communicates with the heat generation device and the internal combustion engine such that a coolant circulates through the internal combustion engine and the heat generation device. The first shutter extends from a front end of an undercover so as to cross between the radiator, and the heat generation device and the internal combustion engine. The second shutter extends between a front end part of the undercover and a lower part of the radiator. The control device controls opening and closing of the first shutter and the second shutter.

Claims7

Dependent claims

A cooling system for a hybrid vehicle driven by an internal combustion engine and a drive motor, the cooling system comprising:

a radiator placed forward of the internal combustion engine and a heat generation device configured to generate heat along with operation of the drive motor, the radiator communicating with the heat generation device and the internal combustion engine such that a coolant circulates through the internal combustion engine and the heat generation device;
a first shutter provided in an openable and closable manner such that the first shutter extends from a front end or a top face of an undercover so as to cross between the radiator, and the heat generation device and the internal combustion engine, the undercover being provided below the internal combustion engine and the heat generation device, the undercover being configured to partially cover a bottom face of the hybrid vehicle;
a second shutter provided in an openable and closable manner such that the second shutter extends between a front end part of the undercover and a lower part of the radiator;
and
a control device configured to control opening and closing of the first shutter and the second shutter.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/179,412Filed 19 Feb 2021
Priority: JP JP2020-07601422 Apr 2020
Published: US 2021/0332740 A128 Oct 2021
Granted: 13 Sep 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

F01P 7/10
The coolant being cooling-air: by throttling amount of air flowing through liquid-to-air heat exchangers
B60K 6/24
Characterised by apparatus, components or means specially adapted for HEVs: characterised by the combustion engines
B60K 6/26
Characterised by apparatus, components or means specially adapted for HEVs: characterised by the motors or the generators
B60K 11/04
With liquid cooling: arrangement or mounting of radiators, radiator shutters, or radiator blinds

Family

US 2021/0332740 A1Pre-grant publication · published 28 Oct 2021
US 11,441,475 B2This patent

From the US filing history. Foreign family members aren’t listed.

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