Rapid warm-up schemes of engine and engine coolant for higher fuel efficiency
US-2017183979-A1 · Jun 29, 2017 · US
Waste heat recovery system
US2019264580A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019264580-A1 |
| Application number | US-201716333498-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 22, 2017 |
| Priority date | Sep 16, 2016 |
| Publication date | Aug 29, 2019 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The invention relates to a waste heat recovery system ( 3 ) for an internal combustion engine ( 1 ), having a working fluid circuit ( 19 ) with a condenser ( 31 ) that is also connected to a working fluid cooling circuit ( 34 ), and wherein the working fluid cooling circuit ( 34 ) has a cooler ( 35 ). The invention provides a waste heat recovery system ( 3 ) having a working fluid cooling circuit ( 34 ) which is improved in comparison to one design of a working fluid cooling circuit ( 34 ). This is achieved by the working fluid cooling circuit ( 34 ) having a cooler bypass ( 46 ). This configuration makes it generally possible for part of the coolant volume flow to be routed past the cooler ( 35 ). This is advantageous in particular at low temperatures since otherwise very low pressures arise in the working fluid cooling circuit ( 34 ).
First claim
Opening claim text (preview).
1 . A waste heat recovery system ( 3 ) for an internal combustion engine ( 1 ), the waste heat recovery system having a working-fluid circuit ( 19 ) with a condenser ( 31 ), wherein the condenser is connected to a working-fluid cooling circuit ( 34 ), and wherein the working-fluid cooling circuit ( 34 ) has a cooler ( 35 ), characterized in that the working-fluid cooling circuit ( 34 ) has a cooler bypass ( 46 ). 2 . The waste heat recovery system ( 3 ) as claimed in claim 1 , characterized in that the cooler bypass ( 46 ) has a cooler bypass control valve ( 47 ). 3 . The waste heat recovery system ( 3 ) as claimed in claim 2 , characterized in that the cooler bypass control valve ( 47 ) is arranged on an input side of the cooler bypass ( 46 ) in the working-fluid cooling circuit ( 34 ). 4 . The waste heat recovery system ( 3 ) as claimed in claim 2 , characterized in that the cooler bypass control valve ( 47 ) is arranged on an output side of the cooler bypass ( 46 ) in the working-fluid cooling circuit ( 34 ). 5 . The waste heat recovery system ( 3 ) as claimed in claim 2 , characterized in that the cooler bypass control valve ( 47 ) is a 3-way valve. 6 . The waste heat recovery system ( 3 ) as claimed in claim 2 , characterized in that the cooler bypass control valve ( 47 ) is a thermostat. 7 . The waste heat recovery system ( 3 ) as claimed in claim 1 , characterized in that the working-fluid cooling circuit ( 34 ) has a working-fluid cooling pump ( 50 ). 8 . The waste heat recovery system ( 3 ) as claimed in claim 1 , characterized in that the working-fluid cooling circuit ( 34 ) is connected to a coolant circuit ( 20 ) of the internal combustion engine ( 1 ). 9 . The waste heat recovery system ( 3 ) as claimed in claim 1 , characterized in that the working-fluid cooling circuit ( 34 ) has a condenser bypass ( 44 ) with respect to the condenser ( 31 ). 10 . The waste heat recovery system ( 3 ) as claimed in claim 9 , characterized in that the condenser bypass ( 44 ) has a condenser bypass control valve ( 45 ).
Assignees
Inventors
Classifications
by use of refrigerating apparatus, e.g. of compressor or absorber type · CPC title
- F01K9/003Primary
condenser cooling circuits · CPC title
the devices using heat · CPC title
- F01K23/065Primary
the combustion taking place in an internal combustion piston engine, e.g. a diesel engine · CPC title
Profiting from waste heat of exhaust gases · CPC title
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Frequently asked questions
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- What does patent US2019264580A1 cover?
- The invention relates to a waste heat recovery system ( 3 ) for an internal combustion engine ( 1 ), having a working fluid circuit ( 19 ) with a condenser ( 31 ) that is also connected to a working fluid cooling circuit ( 34 ), and wherein the working fluid cooling circuit ( 34 ) has a cooler ( 35 ). The invention provides a waste heat recovery system ( 3 ) having a working fluid cooling circu…
- Who is the assignee on this patent?
- Bosch Gmbh Robert
- What technology area does this patent fall under?
- Primary CPC classification F01K9/003. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Aug 29 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).