GB201207567D0 - Method of estimating the coolant inlet temperature in an internal combustion engine - Google Patents

Method of estimating the coolant inlet temperature in an internal combustion engine

Info

Publication number
GB201207567D0
GB201207567D0 GB201207567A GB201207567A GB201207567D0 GB 201207567 D0 GB201207567 D0 GB 201207567D0 GB 201207567 A GB201207567 A GB 201207567A GB 201207567 A GB201207567 A GB 201207567A GB 201207567 D0 GB201207567 D0 GB 201207567D0
Authority
GB
United Kingdom
Prior art keywords
temperature
coolant
internal combustion
inlet temperature
electric thermostat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB201207567A
Other versions
GB2501699B (en
GB2501699A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GM Global Technology Operations LLC
Original Assignee
GM Global Technology Operations LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GM Global Technology Operations LLC filed Critical GM Global Technology Operations LLC
Priority to GB1207567.7A priority Critical patent/GB2501699B/en
Publication of GB201207567D0 publication Critical patent/GB201207567D0/en
Publication of GB2501699A publication Critical patent/GB2501699A/en
Application granted granted Critical
Publication of GB2501699B publication Critical patent/GB2501699B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2037/00—Controlling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2070/00—Details
    • F01P2070/04—Details using electrical heating elements

Abstract

A coolant inlet temperature T2 of an automotive internal combustion engine (fig 4) (with a water pump or a switchable water pump 710, a radiator 720 and an electric thermostat 730) is estimated by: ¢ reading 20 a coolant outlet temperature T1 of the engine, determining 21 if the coolant outlet temperature T1 is higher than a threshold TH1 and if yes, acquiring 22 a third temperature T3 at the radiator outlet, reading 23 the electric thermostat stroke h1 as function of the coolant outlet or inlet temperatures T1/T2 and then reading 24 a flow rate through the radiator and the electric thermostat as function of its stroke and the engine speed, calculating 25 the coolant inlet temperature T2 and then calculating 26 a difference T1-T2 between the coolant outlet and inlet temperatures, assessing 27 the difference against a target value from a map using engine load and speed, refining 28 the duty cycle on the electric thermostat by adjusting the supply voltage and then going back to the first step.
GB1207567.7A 2012-04-30 2012-04-30 Controlling a duty cycle on an electric thermostat Expired - Fee Related GB2501699B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1207567.7A GB2501699B (en) 2012-04-30 2012-04-30 Controlling a duty cycle on an electric thermostat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1207567.7A GB2501699B (en) 2012-04-30 2012-04-30 Controlling a duty cycle on an electric thermostat

Publications (3)

Publication Number Publication Date
GB201207567D0 true GB201207567D0 (en) 2012-06-13
GB2501699A GB2501699A (en) 2013-11-06
GB2501699B GB2501699B (en) 2017-06-07

Family

ID=46330588

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1207567.7A Expired - Fee Related GB2501699B (en) 2012-04-30 2012-04-30 Controlling a duty cycle on an electric thermostat

Country Status (1)

Country Link
GB (1) GB2501699B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112631349A (en) * 2019-09-24 2021-04-09 北京亿华通科技股份有限公司 Control method, control device, computer equipment and storage medium
CN114776434A (en) * 2022-03-23 2022-07-22 东风汽车集团股份有限公司 Engine radiator outlet water temperature estimation method
CN115163282A (en) * 2022-07-14 2022-10-11 东风汽车集团股份有限公司 Control method and control system for cooling engine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014015638A1 (en) * 2014-10-22 2016-04-28 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Controlling a coolant pump and / or a control valve of a cooling system for a ...
CN106089395B (en) * 2016-07-26 2018-11-02 广州汽车集团股份有限公司 Engine water temperature control method and device
CN111335999B (en) * 2018-12-18 2021-02-05 广州汽车集团股份有限公司 Control method and device of electric heating thermostat and electronic control unit
US10961897B2 (en) * 2019-03-01 2021-03-30 Hyundai Motor Company Methods of controlling electrical coolant valve for internal combustion engine
DE102021202411A1 (en) 2021-03-12 2022-09-15 Zf Friedrichshafen Ag Method for determining an outlet temperature of a coolant from a cooler

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4821247B2 (en) * 2005-10-06 2011-11-24 トヨタ自動車株式会社 Cooling water control device for internal combustion engine
JP2008051073A (en) * 2006-08-28 2008-03-06 Aisin Seiki Co Ltd Cogeneration system
JP2010065671A (en) * 2008-09-15 2010-03-25 Denso Corp Failure diagnosis device of cooling system for vehicle
DE112010004686T5 (en) * 2010-10-22 2012-09-20 Kirpart Otomotiv Parcalari Sanayi Ve Ticaret A.S. Electrically heated by means of PTC heating element map-controlled thermostat device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112631349A (en) * 2019-09-24 2021-04-09 北京亿华通科技股份有限公司 Control method, control device, computer equipment and storage medium
CN114776434A (en) * 2022-03-23 2022-07-22 东风汽车集团股份有限公司 Engine radiator outlet water temperature estimation method
CN114776434B (en) * 2022-03-23 2023-11-24 东风汽车集团股份有限公司 Engine radiator outlet water temperature prediction method
CN115163282A (en) * 2022-07-14 2022-10-11 东风汽车集团股份有限公司 Control method and control system for cooling engine
CN115163282B (en) * 2022-07-14 2023-12-05 东风汽车集团股份有限公司 Control method and control system for engine cooling

Also Published As

Publication number Publication date
GB2501699B (en) 2017-06-07
GB2501699A (en) 2013-11-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20180430