A system includes a target generating module, a model predictive control (MPC) module, and an actuator module. The target generating module generates a target value for an actuator of an engine. The MPC module generates a set of possible adjustments to the target value and predicts an operating parameter for the set of possible adjustments. The predicted operating parameter includes an emission level and/or an operating parameter of an exhaust system. The MPC module determines a cost for the set of possible adjustments and selects the set of possible adjustments from multiple sets of possible adjustments based on the cost. The MPC module determines whether the predicted operating parameter for the selected set satisfies a constraint and adjusts the target value using the possible adjustments of the selected set when the predicted operating parameter satisfies the constraint. The actuator module controls the actuator based on the target value as adjusted.

System and method for adjusting target actuator values of an engine using model predictive control to satisfy emissions and drivability targets and maximize fuel efficiency

A diesel engine is provided with a fuel injector which injects fuel into a combustion chamber. An ECU includes a parameter obtaining portion which obtains multiple property parameters indicative of a property of the fuel, and a molecular-weight computing portion which computes multiple molecular-weights based on the multiple property parameters in view of a correlation data which defines a correlation between the multiple property parameters and the multiple molecular-weights of the fuel. Further, the ECU includes a combustion-condition computing portion which computes a combustion parameter indicative of a combustion condition of the diesel engine based on the multiple molecular-weights, and a control portion which performs a combustion control based on the combustion parameter.

Controller for diesel engine

A system according to the present disclosure includes a model predictive control (MPC) module and an actuator module. The MPC module generates a set of possible target values for an actuator of an engine and predicts an operating parameter for the set of possible target values. The predicted operating parameter includes an emission level and/or an operating parameter of an exhaust system. The MPC module determines a cost for the set of possible target values and selects the set of possible target values from multiple sets of possible target values based on the cost. The MPC module determines whether the predicted operating parameter for the selected set satisfies a constraint and sets target values to the possible target values of the selected set when the predicted operating parameter satisfies the constraint. The actuator module controls an actuator of an engine based on at least one of the target values.

System and method for determining target actuator values of an engine using model predictive control while satisfying emissions and drivability targets and maximizing fuel efficiency

A cooling device for a reductant spray module comprises: the reductant spray module provided at an exhaust pipe so as to spray a reductant into the exhaust pipe, and cooled by a coolant supplied through a module cooling channel formed thereinside; a coolant pump for supplying the coolant to the module cooling channel; a coolant circulation line comprising a coolant supply line and a coolant collection line, which connect the coolant pump and the module cooling channel; and a coolant collection unit provided on the coolant collection line connecting the coolant pump and the module cooling channel so as to store the coolant circulated through the reductant spray module, and provided at a higher location, in the direction of gravity, than the reductant spray module. The coolant collection unit has a steam outlet connected to an upper part of the coolant collection unit in the direction of gravity so as to discharge, to the outside, coolant in a steam state inside the coolant collection unit.

Cooling device for reductant spray module, and selective engine cooling sytem having same

A coolant control system of a vehicle includes a coolant pump that pumps coolant to a second radiator that is different than a first radiator that receives coolant from an engine of the vehicle. A diesel exhaust fluid (DEF) injector injects a DEF into an exhaust system and receives coolant output from the second radiator. A fuel heat exchanger transfers heat between coolant and fuel flowing therethrough. An engine control module is configured to determine a temperature of the DEF injector, control a duty cycle of the coolant pump, determine a vaporized condition of the coolant based on a DEF injector temperature, optionally further, in response to determining a vaporized condition of the coolant, implement a vapor purge by oscillating the duty cycle of the coolant pump, and optionally further identify a low-coolant condition of the coolant control system based on the vapor purges implemented during a time period.

Engine and coolant system control systems and methods

A method of estimating a current soot output from an engine includes sensing a mass flow rate of a flow of exhaust gas from the engine, and defining a soot output base rate of the engine when the engine is operating at a reference state. A soot ratio for a current operating state of the engine is calculated. The mass flow rate, the soot output base rate, and the soot ratio are multiplied together to define an estimated value of the current soot output from the engine. The soot ratio is based on current engine operating parameters, including an air/fuel ratio of the engine, an exhaust gas recirculation ratio of the engine, a fuel injection pressure of the engine, and a fuel injection timing of the engine.

Method of estimating soot output from an engine

A computer program, system and method are provided for thermally regulating an injector injecting a reducing agent into an exhaust pipe of an internal combustion engine A pump is activated to deliver a coolant in a coolant circuit having a portion in heat exchange relation with the injector A value is determined for a mass flow rate of the coolant delivered by the pump A value is calculated for a temperature of the injector as a function of the determined value of the mass flow rate A difference is calculated between the calculated value of the injector temperature and a predetermined set-point value thereof, and the mass flow rate of the coolant delivered by the pump is adjusted on the basis of the calculated difference

Method for thermally regulating an injector for injecting a reducing agent into an exhaust pipe of an internal combustion engine

A cast cylinder head having a port lined with an insulating sleeve is provided. The insulating sleeve includes an inner sleeve disposed within an outer sleeve defining an insulating gap between the inner sleeve and outer sleeve. The inner sleeve includes an inlet flange surface and an outlet flange surface joined to an inlet flange surface and an outlet flange surface of the outer sleeve, thereby providing a sealed insulating gap. The insulating gap may contain an insulating material or a vacuum. The outer sleeve includes an exterior surface onto which a molten metal is casted to form the cast cylinder. The exterior surface of the outer-sleeve includes a shoulder to fix the insulating sleeve within a fixed predetermined position within the casting.

Insulating sleeve having an insulating-gap for a cast cylinder head

Ein Verfahren zum Schatzen eines gegenwartigen Rusausgangs von einem Motor umfasst ein Erfassen eines Massendurchflusses einer Stromung von Abgas von dem Motor und ein Definieren einer Rusausgangsbasisrate des Motors, wenn der Motor in einem Referenzzustand arbeitet. Ein Rusverhaltnis fur einen gegenwartigen Betriebszustand des Motors wird berechnet. Der Massendurchfluss, die Rusausgangsbasisrate und das Rusverhaltnis werden miteinander multipliziert, um einen geschatzten Wert des gegenwartigen Rusausgangs von dem Motor zu definieren. Das Rusverhaltnis basiert auf gegenwartigen Motorbetriebsparametern, einschlieslich eines Luft/Kraftstoff-Verhaltnisses des Motors, eines Abgasruckfuhrungsverhaltnisses des Motors, eines Kraftstoffeinspritzdrucks des Motors und eines Kraftstoffeinspritzzeitpunkts des Motors.

Verfahren zum Schätzen einer Rußabgabe aus einem Motor

A cooling system selectively cools an engine and an exhaust gas recirculation (EGR) component of the engine. The cooling system includes a plumbing system with a plurality of flow branches, including an engine branch, an EGR branch, and a feed branch. The engine branch defines an engine flow passage through which the coolant flows to cool the engine. The EGR branch defines an EGR flow passage through which the coolant flows to cool the EGR component. The feed branch defines a feed flow passage. The cooling system has a first operating configuration in which the EGR flow passage is configured to receive coolant flow from the engine flow passage. The cooling system has a second operating configuration in which the EGR flow passage is configured to receive coolant flow from the feed flow passage instead of the engine flow passage.

Cooling system having variable coolant flow paths for exhaust gas recirculation system

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