EP0499071B1
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EP
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Cooling system for an intenal combustion engine of a motor vehicle
Assignee: Mahle Behr GmbH and Co KG
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Filing: 1992-01-24
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Granted: 1994-08-03
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Expires: 2012-01-24
Abstract
No abstract record available.
Inventors
- 👤 Matthias Dipl.-Ing. Banzhaf
- 👤 Wilhelm Dipl.-Ing. Baruschke
- 👤 Jürgen Dipl.-Ing. Barwig (FH)
- 👤 Dieter Dipl.-Ing. Bauer
- 👤 Jochen Dipl.-Ing. Eitel
- 👤 Kurt Dipl.-Ing. Hauser
- 👤 Werner Dipl.-Ing. Helms
- 👤 Karl Dipl.-Ing. Lochmar (Fh)
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 03:35
CPC Classifications
F; F02; F02B; F02B29/00; F02B29/04; F02B29/0406; F02B29/0418; F01; F01P; F01P1/00; F01P3/00; F01P3/20; F01P7/00; F01P7/02; F01P7/026; F01P7/04; F01P7/048; F01P7/14; F01P7/16; F01P7/165; F02B29/0425; F02B29/0431; F28; F28F; F28F27/00; F28F27/02; F01P1/06; F01P2001/005; F01P3/02; F01P2003/021; F01P2003/024; F01P3/18; F01P2003/182; F01P2003/185; F01P2003/187; F01P5/00; F01P5/10; F01P2005/105; F01P5/12; F01P2005/125; F01P2007/146; F01P11/00; F01P11/14; F01P2011/205; F01P2023/00; F01P2023/08; F01P2025/00; F01P2025/04; F01P2025/08; F01P2025/13; F01P2025/32; F01P2025/40; F01P2025/50; F01P2025/70; F01P2037/00; F01P2037/02; F01P2050/00; F01P2050/02; F01P2050/06; F01P2060/00; F01P2060/02; F01P2060/04; F01P2060/045; F01P2060/08; F01P7/044; F01P7/10; F01P7/12; F01P7/164; F02B29/045; F02B29/0475; F28D; F28D21/00; F28D2021/0019; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
279 words
Cooling system for vehicles having an internal combustion engine (1) and which comprises a plurality of cooling circuits with heat exchangers (3, 4, 5, 6) which are associated with said internal combustion engine (1) and with temperature sensors (18 to 21) which are disposed in the respective cooling circuits and are connected to an electrical switching device (10) and the switching device is connected to actuating elements (13, 14, 16, 28, 29) which control the output of the heat exchangers in dependence on the signals from the temperature sensors, a central control unit (10), which comprises at least one microprocessor (114), being provided by means of which the cooling output requirement of the individual cooling circuits can be determined in dependence on the signals from the temperature sensors (18 to 21, 36, 38, 42, 49, 73, 74, 85 to 87, 94 to 97), and actuating means (13, 14, 16, 28, 29, 34, 35, 91 to 93, 100 to 102, 108) for individually influencing the output of the relevant heat exchanger (3, 4, 5, 6) being associated with each cooling circuit, characterised in that, of the cooling circuits, a first cooling circuit is intended to cool the engine coolant, a second is intended to cool the engine oil and a third is intended to cool the charging air; and in that a performance-controlled radiator (8) of a vehicle heating system is connected to the engine cooling circuit, and a valve (17, 102) and a temperature sensor (21) are associated with the radiator (8), the temperature sensor (21) being connected to the input terminals (E) and the valve (17) being connected to the output terminals (A) of the control unit (10).
Claim 2
Dependent Claim
46 words
Cooling system according to Claim 1, characterised in that a rotational speed-controlled pump (13, 25, 109) and an electrically controllable valve (14, 16, 17, 28, 29, 34, 35, 50, 54, 72, 77, 78, 82, 91 to 93, 100 to 102, 108) are provided as actuating means.
Claim 3
Dependent Claim
35 words
Cooling system according to Claim 2, characterised in that a valve-controlled bypass (27, 33) is associated with at least one further heat exchanger (4, 6) in addition to the cooler (3) for the engine coolant.
Claim 4
Dependent Claim
32 words
Cooling system according to Claim 2 and Claim 3, characterised in that at least one cooling circuit is equipped with a rotational speed-controlled pump (13, 25) and a valve-controlled bypass (15, 27).
Claim 5
Dependent Claim
54 words
Cooling system according to any one of the preceding claims, characterised in that a separate coolant delivery and coolant discharge are provided in each case for the engine block (70) and the cylinder head (71) and at least one of these coolant connections can be throttled or blocked by means of a valve (72).
Claim 6
Dependent Claim
25 words
Cooling system according to any one of the preceding claims, characterised in that a cooling circuit (5, 37, 39) is provided for the gear oil.
Claim 7
Dependent Claim
72 words
Cooling system according to any one of the preceding claims, characterised in that an intermediate heat exchanger (43, 45, 90), which is acted upon by an intermediate carrier medium, is used in the cooling circuits for the engine oil and/or the charging air and/or the gear oil, a coolant which corresponds in terms of its consistency to that of the engine cooling circuit preferably being used as the intermediate heat carrier medium.
Claim 8
Dependent Claim
78 words
Cooling system according to Claim 7, characterised in that at least two heat exchangers (3, 44, 46) which are connected in parallel in terms of flow are provided for the engine coolant and valve means (54) are connected into the connection lines (53) of these heat exchangers (3, 44, 46) and/or of the intermediate heat exchangers (43, 45), and rotational speed-controlled pumps (52) are provided in the coolant connection lines (48) of the intermediate heat exchangers (43, 45).
Claim 9
Dependent Claim
86 words
Cooling system according to any one of the preceding claims, characterised in that an exhaust gas heat exchanger (79, 105) downstream of which a turbocharger (9) is disposed in terms of flow is disposed in the exhaust gas line of the internal combustion engine (1), the exhaust gas heat exchanger (105) preferably being acted upon from the secondary side by an airstream generated by a fan and the air stream being delivered to a heat exchanger (103) through which coolant from the engine cooling circuit flows.
Claim 10
Dependent Claim
56 words
Cooling system according to any one of the preceding claims, characterised in that a heat accumulator (99) is connected to the performance-controlled radiator (8) of a vehicle heating system, it being possible for the heat accumulator (99) to be connected in series with the radiator (8) or completely blocked or so as to bypass the latter.
Claim 11
Dependent Claim
22 words
Cooling system according to Claim 1, characterised in that additional heating devices (75) for auxiliary units are connected to the cooling circuit.
Claim 12
Dependent Claim
31 words
Cooling system according to any one of the preceding claims, characterised in that at least one blockable coolant line of the engine cooling circuit is provided for cooling auxiliary units (76).
Claim 13
Dependent Claim
58 words
Cooling system according to any one of the preceding claims, characterised in that at least one rotational speed-controlled ventilator (62) is associated with the heat exchangers (3, 4, 6, 7, 44, 46) which are acted upon by cooling air, an electric motor (63), a fluid friction coupling or a hydrostatic drive being used to drive the ventilator (62).
Claim 14
Dependent Claim
30 words
Cooling system according to Claim 13, characterised in that the rotational speed of the ventilator (62) can be regulated in dependence of output signals of the central control unit (10).
Claim 15
Dependent Claim
73 words
Cooling system according to Claim 13, characterised in that a louvre (60) is disposed in the air flow path and can be controlled in dependence on output signals from the central control unit (10), at least one heat exchanger (4, 6) being provided with a controllable air path deflection device (64, 65) or it being possible for the air flow path to be blocked on the outflow side of the heat exchanger arrangement.
Claim 16
Dependent Claim
30 words
Cooling system according to Claim 15, characterised in that a separate air guide duct (111) for purposefully acting upon specific units in the engine compartment with cooling air is provided.
Claim 17
Dependent Claim
54 words
Cooling system according to any one of the preceding claims, characterised in that, in addition to a plurality of temperature sensors, at least one pressure sensor (83), a filling level sensor (84, 98) and/or a rotational speed sensor (88) for the rotational speed of the crankshaft of the internal combustion engine (1) are provided.
References Cited (Backward Citations)
No citation records indexed.
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