APPARATUS FOR MONITORING AN OIL THERMOSTAT
First Claim
1. An apparatus for monitoring an oil thermostat arranged in an oil circuit of an internal combustion engine, wherein the oil thermostat is designed to supply an oil flow to a first flow branch in which an oil cooler is arranged or to a bypass flow branch depending on an admission temperature (T2) of the oil flow supplied to the oil thermostat, wherein a first outlet of the oil thermostat, which outlet is assigned to the first flow branch, is closed when the admission temperature (T2) lies below a first temperature threshold value (T1), wherein the apparatus comprises:
- (a) a sensor device which is designed to determine at least one first parameter by means of which a current desired operation of the oil thermostat can be derived, and to determine at least one second parameter by means of which a current actual operation of the oil thermostat can be derived; and
(b) an evaluation device which is designed, depending on the first parameter and the second parameter, to identify an occurrence of a malfunction of the oil thermostat.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to an apparatus for monitoring an oil thermostat arranged in an oil circuit of an internal combustion engine. The apparatus comprises a sensor unit (4, 14b; 15) which is designed to determine at least one first parameter, by means of which a current setpoint operation of the oil thermostat (10) can be derived, and to determine at least one second parameter, by means of which a current actual operation of the oil thermostat (10) can be derived. The apparatus further comprises an evaluation device (40), which is designed to detect an onset of an error function of the oil thermostat (10) as a function of the first parameter and the second parameter.
14 Citations
17 Claims
-
1. An apparatus for monitoring an oil thermostat arranged in an oil circuit of an internal combustion engine, wherein the oil thermostat is designed to supply an oil flow to a first flow branch in which an oil cooler is arranged or to a bypass flow branch depending on an admission temperature (T2) of the oil flow supplied to the oil thermostat, wherein a first outlet of the oil thermostat, which outlet is assigned to the first flow branch, is closed when the admission temperature (T2) lies below a first temperature threshold value (T1), wherein the apparatus comprises:
-
(a) a sensor device which is designed to determine at least one first parameter by means of which a current desired operation of the oil thermostat can be derived, and to determine at least one second parameter by means of which a current actual operation of the oil thermostat can be derived; and (b) an evaluation device which is designed, depending on the first parameter and the second parameter, to identify an occurrence of a malfunction of the oil thermostat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A vehicle, in particular commercial vehicle, comprising
an apparatus for monitoring an oil thermostat arranged in an oil circuit of an internal combustion engine, wherein the oil thermostat is designed to supply an oil flow to a first flow branch in which an oil cooler is arranged or to a bypass flow branch depending on an admission temperature (T2) of the oil flow supplied to the oil thermostat, wherein a first outlet of the oil thermostat, which outlet is assigned to the first flow branch, is closed when the admission temperature (T2) lies below a first temperature threshold value (T1), wherein the apparatus includes: -
(a) a sensor device which is designed to determine at least one first parameter by means of which a current desired operation of the oil thermostat can be derived, and to determine at least one second parameter by means of which a current actual operation of the oil thermostat can be derived; and (b) an evaluation device which is designed, depending on the first parameter and the second parameter, to identify an occurrence of a malfunction of the oil thermostat.
-
Specification