Patent ID: 8447501
Filing Date: 2013-05-21
Classification: F02D,F02N,Y02T

Abstract:
1. A method for managing automatic stopping of an engine of an automobile, comprising: a) determining a value representative of temperature of exhaust gases circulating in an exhaust duct of the engine upstream of a turbine of a turbocharger placed on a line of the exhaust duct; b) comparing the value representative of the temperature of the exhaust gases upstream of the turbine with a predetermined threshold value; c) if the value representative of the temperature of the exhaust gases upstream of the turbine is higher than the predetermined threshold value, timing-out of a first predetermined time delay is initiated during which the determining a) and the comparing b) are repeated; if, in c), during the timing-out of the first time delay, a value representative of the temperature lower than the predetermined threshold value is determined, the timing-out of the first delay is suspended and an operation d) is carried out; d) if the value representative of the temperature of the exhaust gases upstream of the turbine is lower than the predetermined threshold value, the timing-out of a second predetermined time delay is initiated during which the determining a) and the comparing b) are repeated; if, in d), during the second time delay, a value representative of the temperature higher than the predetermined threshold value is determined, the timing-out of the second time delay is stopped, measurement of this timing-out of the second time delay is reset and c) is carried out; e) if the first time delay has timed out and the value representative of the temperature of the exhaust gases upstream of the turbine is higher than the predetermined threshold value, the automatic stopping of the engine is prohibited; f) if the second time delay has timed out and the value representative of the temperature of the exhaust gases upstream of the turbine is lower than the predetermined threshold value, the automatic stopping of the engine is allowed and the measurement of the timing-out of the first time delay is reset.