An apparatus for cleaning a motorization system includes an injector that injects cleaning fluid into an inlet of an internal-combustion engine, a diagnostic device that determines the system's soiling level as a function of intrinsic parameters thereof, and a controller that supplies the injection device with cleaning parameters that depend on the soiling level. The motorization includes the engine and a gas-circulation circuit having pipes and moving parts arranged to feed the inlet a gas mixture for combustion.

A regeneration compliance system is provided and includes navigation, regeneration, zone and timing modules. The navigation module determines a location of a vehicle. The regeneration module determines a state of a PF of an exhaust system of an engine of the vehicle and whether to regenerate the PF based on the state of the PF. The zone module, based on the location of the vehicle, determines whether the vehicle is in a regeneration permitted zone and where regeneration permitted and prohibited zones are located relative to the vehicle. The timing module estimates time to a next regeneration permitted zone or an amount of time remaining in a current regeneration permitted zone. The regeneration module controls when the PF is regenerated based on (i) the state of the PF, and (ii) the time to the next regeneration permitted zone or the amount of time remaining in the current regeneration permitted zone.

A method for the quality assurance of exhaust gas behavior in a motor vehicle, particularly in a hybrid vehicle, includes monitoring an on-board-diagnosis function; providing a journey counter a diagnosis counter, and a nominal diagnosis frequency value; incrementing the journey counter following the beginning of a driving cycle; generating an actual diagnosis frequency value using a combination of the diagnosis counter and the drive counter; and establishing a difference between the nominal diagnosis frequency value and the actual diagnosis frequency value. If the difference falls short of a threshold: a control method is selected, which is designed to successfully complete a currently running OBD of the OBD function and to initiate and complete a non-running OBD. Following the completion of the OBD of the OBD function, the diagnosis counter is incremented and the motor control restored to an original motor control.

A process for optimizing a depollution of nitrogen oxides from the gases in an engine exhaust line carried out according to a selective catalytic reduction by injection of a quantity of reducing agent into the line makes it possible to monitor a setpoint of the amount of nitrogen oxides per second at the outlet of the line. A readjustment of the setpoint is made at each completion of successive running distance intervals determined by integration of the speed over a time interval that ends as soon as a predetermined target cumulative amount of carbon dioxide released is reached, an amount of nitrogen oxides at the outlet per kilometer traveled being calculated for each interval from a cumulative amount of nitrogen oxides measured at the outlet and compared with a target amount of nitrogen oxides per kilometer for the calculation of a deviation used for the readjustment of the setpoint.

An exhaust purification system of the internal combustion engine comprises: an upstream side catalyst 20 arranged in an exhaust passage, a downstream side catalyst 24 arranged at a downstream side of the upstream side catalyst, an air-fuel ratio sensor 41 detecting an air-fuel ratio of outflowing exhaust gas flowing out from the upstream side catalyst, an air-fuel ratio control part 31 controlling an air-fuel ratio of inflowing exhaust gas flowing into the upstream side catalyst to a target air-fuel ratio, and a temperature calculating part 32 calculating a temperature of the downstream side catalyst. The air-fuel ratio control part switches the first control to the second control when a temperature of the downstream side catalyst calculated by the temperature calculating part rises to a reference temperature which is equal to or higher than an activation temperature of the downstream side catalyst.

A particulate detection system detects the amount of particulates contained in filtered exhaust gas which has passed through a filter and is discharged to the outside of the vehicle. The particulate detection system includes a sensor disposed on the downstream side of the filter; a sensor circuit section which drives the sensor and obtains in real time a sensor output corresponding to the volumetric particulate amount of the particulates contained in the filtered exhaust gas; and a computation section which computes a distance particulate amount which is the weight or number of the particulates discharged per unit travel distance on the basis of the sensor output obtained by the sensor circuit section, travel distance of the vehicle, and flow rate of the exhaust gas.

A control device for a hybrid vehicle includes a driving control part configured to acquire for each driving road section from a server a value of the output parameter linked with a vehicle speed of the same extent as the scheduled vehicle speed when driving over a driving road section on a scheduled driving route to calculate for each driving road section the scheduled vehicle demanded output when driving over the driving road section or acquire from the server the scheduled vehicle demanded output for each driving road section calculated based on the value of the output parameter for each driving road section at the server to heat the catalyst device before using the output of the internal combustion engine as part of the drive power when there is the driving road section where the scheduled vehicle demanded output becomes the engine start output or more.

A method and system controls a regeneration of a particle filter of an internal combustion engine. A first value is measured for the oxygen content in exhaust gas upstream from the particle filter. A second value is measured for the oxygen content in exhaust gas downstream from the particle filter. The particle filter is determined to be free of soot when the second value for the oxygen content is equal to the first value for the oxygen content.

Methods and systems are provided for regenerating an exhaust particulate filter based on a projected vehicle drive cycle and catalyst ammonia storage level. In one example, a method may include scheduling a PF regeneration during a regeneration window to maintain a threshold ammonia level in an exhaust catalyst, at the end of the drive cycle.

An exhaust gas-purifying system includes an exhaust gas-purifying unit that includes one or more exhaust gas-purifying catalysts, is supplied with the exhaust gas from a combustion engine, and purifies the exhaust gas so that the exhaust gas can be released to the atmosphere, a sensor that detects a concentration of nitrogen oxides contained in the purified exhaust gas, and a processing section that makes a judgment with respect to at least one of the exhaust gas-purifying catalysts, as to whether or not a performance is maintained at a sufficient level, based on the concentration detected by the sensor.