A method for controls the operation of a hydrogen combustion engine system of a vehicle including a hydrogen combustion engine and an exhaust aftertreatment system, EATS, to reduce emissions in the engine exhausts. The EATS comprises a selective catalyst reduction, SCR, catalyst and an ammonia slip…
In an opposed-piston engine which includes a catalytic aftertreatment device in its exhaust system an exhaust gas condition indicating a catalyst temperature of the aftertreatment device is monitored. When the catalyst temperature is near or below a light-off temperature, a catalyst light-off…
A system and method of controlling operation of an internal combustion engine are provided. The method includes performing a cylinder deactivation operation while running the engine, selecting at least one of the plurality of temperature maintenance actions to increase an exhaust temperature, and…
In an opposed-piston engine which includes a catalytic aftertreatment device in its exhaust system an exhaust gas condition indicating a catalyst temperature of the aftertreatment device is monitored. When the catalyst temperature is near or below a light-off temperature, a catalyst light-off…
For the regeneration of a particulate filter (3) of an internal combustion engine (2) for a vehicle (10), the following steps are carried out: switching into a preheating operating state of the internal combustion engine (2), wherein in the preheating operating state a preheating of exhaust gases…
A control device for an engine, capable of accurately estimating the quantity of exhaust heat from the engine and performing engine control which improves the exhaust quality and fuel consumption of the engine in various operating conditions thereof, by using the accurate extimated value of the…
System for desulfating a nitrogen oxide trap associated with an oxidation catalyst on a common support in the exhaust system of an automobile diesel engine with a common rail fuel injection system capable of adopting two lean burn strategies comprises devices for running the engine according to…
A particulate filter (41) which traps particulate matter in the exhaust gas of a diesel engine (1), regenerates when a controller (31) performs an exhaust gas increase operation which includes decreasing the opening of an intake throttle (42). The controller (31), during regeneration of the filter…
A regeneration control device which regenerates a filter (4) which traps particulate matter in the exhaust gas of an engine (1) is disclosed. The regeneration control device includes a first temperature sensor (16, 17), which detects one of an upstream temperature and a downstream temperature…
Method for increasing the waste gas temperature of internal combustion engines, especially those used to drive motor vehicles, comprises applying a stress so as to reach the regeneration temperature required by at least one component of the waste gas after-treatment device. The new feature is that…
The system has an air circuit for driving the air to a diesel type engine (1), and a catalyst (3) receiving the exhaust gas coming from the engine through an exhaust manifold (16). A valve (22) is provided in the circuit for throttling the passage of air. A control unit (24) acts on the valve…
A regeneration control device which regenerates a filter (13) by increasing an exhaust gas temperature to burn exhaust gas particulates trapped in the filter, is disclosed. The filter (13) traps particulate matter in exhaust gas from an engine (1). The regeneration control device suppresses fuel…
An exhaust emission control system for a vehicle including a primary engine (5) and a secondary engine (6) having a displacement smaller than that of the primary engine is provided with an exhaust passage (250, 260, 262) having a junction portion (264) at which exhaust gas discharged from the…
A fuel injection control device includes an exhaust purification device for purifying an exhaust gas by catalytic action, an exhaust gas-temperature detection unit for detecting exhaust gas temperature, and a determination unit for determining the amount of the basic fuel injection and basic fuel…
The internal combustion engine (1) receives air through an inlet manifold (2) and has a connection (9) with a control computer (7). The computer receives inputs (8) from temperature sensors upstream (5) and downstream (6) of the catalytic converter (4) in the exhaust pipe (3). The control computer…