Patent EP0323210A2 successfully refreshed from Google Patents.
EP0323210A2
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EP
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Cooling control system
Assignee: Honda Motor Co Ltd
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Filing: 1988-12-28
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Granted: —
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Expires: 2008-12-28
Abstract
Abstract In a cooling control system for controlling cooling of an engine room of an engine, a water pump and/or cooling fans are arranged within the engine room to cool same, and electric motors (201,29,30) electrically drive the water pump and cooling fans. A control unit (15) compares a temperature of the engine detected by a temperature sensor with a plurality of different predetermined values, and based upon results of the comparison, controls the electric motors for driving the cooling fans in such a manner that as the detected temperature is higher, the flow rate of cooling air flowing in the engine room is larger. The control unit is operable when abnormality occurs in sensors for sensing operating conditions of the engine, for operating the electric motors to drive the water pump and cooling fans. Alternatively, an analog circuit (152) is operable when abnormality occurs in the control unit, for operating the electric motors to drive the water pump and the cooling fans.
Inventors
- 👤 Yasuyuki C/O Honda R & D Co. Ltd. Aihara
- 👤 Shuji C/O Honda R & D Co. Ltd. Katoh
- 👤 Shigeki C/O Honda R & D Co. Ltd. Baba
- 👤 Eitetsu C/O Honda R & D Co. Ltd. Akiyama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 14:02
CPC Classifications
B; B60; B60K; B60K11/00; F; F01; F01P; F01P11/00; F01P11/14; F01P7/00; F01P7/02; F01P7/026; F01P7/04; F01P7/048; F01P7/14; F01P7/16; F01P7/164; F02; F02B; F02B29/00; F02B29/04; F02B29/0406; F02B29/0437; F02B29/0443; F01P1/00; F01P2001/005; F01P2025/00; F01P2025/08; F01P2025/40; F01P2025/46; F01P2031/00; F01P2031/22; F01P2060/00; F01P2060/02; F01P5/00; F01P5/02; F01P5/04; F01P5/043; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
117 words
A cooling control system for controlling cooling of an engine room of an engine, comprising: cooling means arranged within said engine room for cooling said engine room; driving means for electrically driving said cooling means; temperature detecting means for detecting a temperature of said engine; and control means for comparing a value of the temperature of said engine detected by said temperature detecting means with a plurality of different predetermined values, and based upon results of the comparison, controlling said driving means for driving said cooling means in a manner such that as the detected temperature is higher, a flow rate of cooling air created by said cooling means and flowing in said engine room is larger.
Claim 2
Dependent Claim
117 words
A cooling control system for controlling cooling of an engine room of an engine, comprising: cooling means arranged within said engine room for cooling said engine room; driving means for electrically driving said cooling means; temperature detecting means for detecting a temperature of said engine; and control means for comparing a value of the temperature of said engine detected by said temperature detecting means with a plurality of different predetermined values, and based upon results of the comparison, controlling said driving means for driving said cooling means in a manner such that as the detected temperature is higher, a flow rate of cooling air created by said cooling means and flowing in said engine room is larger.
Claim 3
Dependent Claim
22 words
A cooling control system as claimed in claim 1, wherein said temperature detecting means detects the temperature of coolant in said engine.
Claim 4
Dependent Claim
47 words
A cooling control system as claimed in claim 1 or 2, wherein said cooling means comprises a first cooling fan arranged at a first location within said engine room for cooling said engine, and a second cooling fan arranged at a second location within said engine room.
Claim 5
Dependent Claim
201 words
A cooling control system as claimed in claim 3, wherein: said first cooling fan is capable of being selectively driven for rotation at a predetermined higher speed and at a predetermined lower speed, said driving means comprising first driving means for driving said first cooling fan, and second driving means for driving said second cooling fan; said control means controlling said first and second driving means in a manner such that said first cooling fan alone is driven for rotation at said predetermined lower speed when the value of the temperature of said engine detected by said temperature detecting means is above a first predetermined value and below a second predetermined value higher than said first predetermined value, said first cooling fan alone is driven for rotation at said predetermined higher speed when the detected value of the temperature of said engine is above said second predetermined value and below a third predetermined value higher than said second predetermined value, and said first cooling fan is driven for rotation at said predetermined higher speed and at the same time said second cooling fan is driven when the detected value of the temperature of said engine is above said third predetermined value.
Claim 6
Dependent Claim
21 words
A cooling control system as claimed in claim 3 or claim 4, wherein said first cooling fan comprises a radiator fan.
Claim 7
Dependent Claim
40 words
A cooling control system as claimed in claim 4 or claim 5, wherein said second cooling fan comprises a fan arranged at a rear upper portion of said engine room for introducing fresh air into said engine room from outside.
Claim 8
Dependent Claim
85 words
A cooling control system as claimed in any preceding claim wherein said control means is operable when said engine is in operation, for comparing the detected value of the temperature of said engine with said plurality of different predetermined values, and during the operation of said engine, based upon results of the comparison, controlling said driving means for driving said cooling means in a manner such that as the detected temperature is higher, the flow rate of cooling air in said engine room is larger.
Claim 9
Dependent Claim
69 words
A cooling control system for controlling cooling of an internal combustion engine having a turbocharger, an intercooler, and sensor means for detecting operating conditions of said engine, comprising: cooling means for cooling at least one of said turbocharger and said intercooler; driving means for driving said cooling means; and control means operable when abnormality occurs in said sensor means, for operating said driving means to drive said cooling means.
Claim 10
Dependent Claim
69 words
A cooling control system for controlling cooling of an internal combustion engine having a turbocharger, an intercooler, and sensor means for detecting operating conditions of said engine, comprising: cooling means for cooling at least one of said turbocharger and said intercooler; driving means for driving said cooling means; and control means operable when abnormality occurs in said sensor means, for operating said driving means to drive said cooling means.
Claim 11
Dependent Claim
71 words
A cooling control system as claimed in claim 8, wherein said control means compares a temperature of said engine with at least one predetermined value, and controls said driving means based upon a result of said comparison, said control means changing said at least one predetermined value such that said cooling means can operate within an expanded range of said temperature of said engine when abnormality occurs in said sensor means.
Claim 12
Dependent Claim
61 words
A cooling control system as claimed in claim 8 or claim 9, wherein said cooling means comprises a pump for supplying coolant to said at least one of said turbocharger and said intercooler, and a radiator fan for cooling said engine, said pump and said radiator fan being both operated by said driving means when abnormality occurs in said sensor means.
Claim 13
Dependent Claim
27 words
A cooling control system as claimed in claim 8, wherein said sensor means includes at least one sensor for sensing at least one temperature of said engine.
Claim 14
Dependent Claim
80 words
A cooling control system as claimed in claim 11, wherein said control means decides that said at least one sensor is abnormal when a value of said at least one temperature of said engine detected by said at least one sensor falls out of a predetermined range within which outputs from said at least one sensor can fall when it is normally functioning, and then sets the detected value of said at least one temperature to a predetermined fixed value.
Claim 15
Dependent Claim
30 words
A cooling control system, as claimed in claim 12, wherein said predetermined fixed value is higher than a normal value and at which said cooling means can be positively operated.
Claim 16
Dependent Claim
72 words
A cooling control system for controlling cooling of an internal combustion engine having a turbocharger, and an intercooler, comprising: cooling means for cooling at least one of said turbocharger and said intercooler; driving means for driving said cooling means; control means for controlling said driving means to drive said cooling means; and fail-safe means operable when abnormality occurs in said control means, for operating said driving means to drive said cooling means.
Claim 17
Dependent Claim
72 words
A cooling control system for controlling cooling of an internal combustion engine having a turbocharger, and an intercooler, comprising: cooling means for cooling at least one of said turbocharger and said intercooler; driving means for driving said cooling means; control means for controlling said driving means to drive said cooling means; and fail-safe means operable when abnormality occurs in said control means, for operating said driving means to drive said cooling means.
Claim 18
Dependent Claim
27 words
A cooling control system as claimed in claim 14, wherein said fail-safe means includes an analog circuit connected to both said control means and said driving means.
Claim 19
Dependent Claim
61 words
A cooling control system as claimed in claim 15, wherein said cooling means comprises a pump for supplying coolant to said at least one of said turbocharger and said intercooler, and a radiator fan for cooling said engine, said analog circuit causing said driving means to operate both said pump and said radiator fan when abnormality occurs in said control means.
Claim 20
Dependent Claim
102 words
A cooling control system as claimed in claim 15 or claim 16, wherein said fail-safe means includes timer means for counting a predetermined period of time which is longer than a period of time within which said control means is to complete a predetermined processing, and generating a signal and supplying same to said analog circuit when counting said predetermined period of time starting from the time said control means started said predetermined processing, before said control means completes same, said analog circuit being responsive to said signal for causing said driving means to operate both said pump and said radiator fan.
References Cited (Backward Citations)
No citation records indexed.
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