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4-Traders Homepage  >  Equities  >  Tokyo  >  Denso Corp    6902   JP3551500006

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Denso : Patent Issued for Vehicle Heat Management System Including a Switching Valve (USPTO 9649909)

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05/25/2017 | 11:11pm CEST

By a News Reporter-Staff News Editor at Journal of Engineering -- According to news reporting originating from Alexandria, Virginia, by VerticalNews journalists, a patent by the inventors Enomoto, Norihiko (Nagoya, JP); Kakehashi, Nobuharu (Toyoake, JP); Nishikawa, Michio (Nagoya, JP), filed on May 21, 2013, was published online on May 16, 2017.

The assignee for this patent, patent number 9649909, is DENSO CORPORATION (Kariya, Aichi-pref., JP).

Reporters obtained the following quote from the background information supplied by the inventors: "In the past, Patent Document 1 disclosed a cooling device for a hybrid electric vehicle that includes an engine cooling system of which the target coolant temperature is high, a motor cooling system of which the target coolant temperature is medium, and a battery cooling system of which the target coolant temperature is low.

"In this related art, a water pump is disposed in each of the engine cooling system, the motor cooling system, and the battery cooling system, an engine is disposed in the engine cooling system, and an electric motor and a heat storage device are disposed in the motor cooling system.

"Further, in this related art, the engine cooling system and the motor cooling system are connected to each other through a coolant pipe and a three-way valve, and the engine cooling system and the motor cooling system can be disconnected from each other or connected to each other.

"For example, a motor generator, an inverter, a battery, an EGR cooler, an intake air cooler, and the like are present as heat exchange devices, which are mounted on the vehicle, in addition to the engine, the electric motor, and the heat storage device. Required control temperatures of these heat exchange devices are different from each other."

In addition to obtaining background information on this patent, VerticalNews editors also obtained the inventors' summary information for this patent: "According to the examination of an inventor of this disclosure, for the appropriate management of the temperatures of those heat exchange target devices in the above-mentioned related art, the number of cooling systems is increased according to the number of the heat exchange target devices, and the number of three-way valves, which are used to disconnect or connect the respective cooling systems, is also increased accordingly. For this reason, there is a concern that the entire configuration may become very complicated.

"An object of the present disclosure is to simplify the configuration of a vehicle heat management system capable of switching between a case in which each of multiple paths forms an independent heat transfer medium circuit and a case in which the multiple paths are connected to form a heat transfer medium circuit.

"According to an aspect of the present disclosure, a vehicle heat management system includes a first pump and a second pump that suck a heat transfer medium and discharge the heat transfer medium, a first path in which the heat transfer medium flows and the first pump is disposed, a second path in which the heat transfer medium flows and the second pump is disposed, a first flow passage group that includes flow passages in which the heat transfer medium flows, a first switching valve to which an inlet side of the first path and an inlet side of the second path are connected in parallel and to which outlet sides of the flow passages of the first flow passage group are connected in parallel, wherein the first switching valve switches communication states of the flow passages of the first flow passage group individually between a state communicating with the first path and a state communicating with the second path, and a second switching valve to which an outlet side of the first path and an outlet side of the second path are connected in parallel and to which inlet sides of the flow passages of the first flow passage group are connected in parallel, wherein the second switching valve switches communication states of the flow passages of the first flow passage group individually between a state communicating with the first path and a state communicating with the second path. The first switching valve and the second switching valve operate in conjunction with each other. When a first predetermined condition is satisfied, each of the flow passages of the first flow passage group communicates with either the first path or the second path to provide a heat transfer medium circuit including the first path and a heat transfer medium circuit including the second path which are independent from each other. When a second predetermined condition is satisfied, each of the flow passages of the first flow passage group communicates with both the first path and the second path to provide a heat transfer medium circuit in which the first path communicates with the second path in series.

"Accordingly, a state in which each of multiple paths forms an independent heat transfer medium circuit and a state in which the multiple paths are connected to form a heat transfer medium circuit can be switched therebetween by a simple configuration in which the multiple paths are connected to the flow passage groups by the switching valves (see FIGS. 7 to 10 to be described below)."

For more information, see this patent: Enomoto, Norihiko; Kakehashi, Nobuharu; Nishikawa, Michio. Vehicle Heat Management System Including a Switching Valve. U.S. Patent Number 9649909, filed May 21, 2013, and published online on May 16, 2017. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9649909.PN.&OS=PN/9649909RS=PN/9649909

Keywords for this news article include: DENSO CORPORATION, Auto Part Companies.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2017, NewsRx LLC

(c) 2017 NewsRx LLC, source Science Newsletters

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Financials ( JPY)
Sales 2018 4 676 568 M
EBIT 2018 378 161 000 M
Net income 2018 272 215 M
Finance 2018 431 987 M
Yield 2018 2,63%
P/E ratio 2018 13,74
P/E ratio 2019 12,75
EV / Sales 2018 0,72x
EV / Sales 2019 0,67x
Capitalization 3 777 385 M
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Number of Analysts 19
Average target price 5 381  JPY
Spread / Average Target 13%
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Koji Arima President & Representative Director
Nobuaki Katoh Chairman
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