A system and approach for development of setpoints for a controller of a powertrain system. The controller may be parameterized as a function of setpoints to provide performance variables that are considered acceptable by a user or operator for current operating conditions of the engine or powertrain. The controller may determine set point trajectories in real time during operation of the powertrain system and determine positions of manipulated variables do drive controlled variables to associated and determined set point trajectories. The present system and approach may determine set point trajectories for powertrain conditions on-line and in real time, whereas set point trajectories have previously been determined off-line for powertrain control.

A coolant control system of a vehicle includes a pump control module and a coolant valve control module. The pump control module selectively activates a coolant pump. The coolant pump pumps coolant into coolant channels formed in an integrated exhaust manifold (IEM) of an engine. The coolant valve control module selectively actuates a coolant valve that controls coolant flow from the coolant channels formed in the IEM to a transmission heat exchanger based on a first temperature of a transmission and a second temperature of coolant within the integrated exhaust manifold of the engine.

This grille shutter control device controls opening and closing of a grille shutter, taking into account not only the cooling performance of a vehicle, but also other performance aspects. The grille shutter control device is a grille shutter control device for controlling opening and closing of a grille shutter in a vehicle equipped with an internal combustion engine, wherein a control device includes: a logic selecting unit for selecting one logic from among a plurality of opening degree determining logics for determining an opening degree of a grille shutter, on the basis of an atmospheric temperature inside an exhaust pipe (K1) of an engine; and a logic executing unit for controlling opening and closing of the grille shutter by executing the one logic selected by the logic selecting unit.

A vehicle thermal management system includes a radiator receiving a liquid coolant in a coolant supply line and discharging the coolant into a coolant pump supply line. A coolant pump receives the coolant from the coolant pump supply line and discharges the coolant into multiple engine components. A transmission oil heat exchanger defining a first transmission oil heat exchanger receives the coolant after being discharged from the multiple engine components. An air-to-coolant sub-cooling heat exchanger defines a second transmission oil heat exchanger. The sub-cooling heat exchanger receives a portion of the coolant bypassing the multiple engine components.

A water jacket of an engine may include: a block-side water jacket formed in a cylinder block of the engine and surrounding a cylinder of the cylinder block; and a head-side water jacket formed in a cylinder head of the engine and surrounding a combustion chamber and an exhaust port of the cylinder head. In particular, the head-side water jacket includes: a first coolant passage surrounding the combustion chamber of the cylinder head, and a second coolant passage surrounding the exhaust port of the cylinder head, and the second coolant passage is fluidly separated from the first coolant passage.

A vehicle propulsion system includes an engine having a coolant inlet and a coolant outlet, a coolant pump having an outlet in communication with the engine coolant inlet, a pressure sensor in fluid communication with the engine coolant outlet and that generates a pressure signal indicative of a pressure in the engine coolant outlet, and a controller in communication with the pressure sensor and the coolant pump. The controller is programmed to control a flow of coolant through the engine from the coolant pump based upon the pressure signal.

A vehicle thermal management system includes a radiator receiving a liquid coolant in a coolant supply line and discharging the coolant into a coolant pump supply line. A coolant pump receives the coolant from the coolant pump supply line and discharges the coolant into multiple engine components. A transmission oil heat exchanger defining a first transmission oil heat exchanger receives the coolant after being discharged from the multiple engine components. An air-to-coolant sub-cooling heat exchanger defines a second transmission oil heat exchanger. The sub-cooling heat exchanger receives a portion of the coolant bypassing the multiple engine components.

A water jacket of an engine may include: a block-side water jacket formed in a cylinder block of the engine and surrounding a cylinder of the cylinder block; and a head-side water jacket formed in a cylinder head of the engine and surrounding a combustion chamber and an exhaust port of the cylinder head. In particular, the head-side water jacket includes: a first coolant passage surrounding the combustion chamber of the cylinder head, and a second coolant passage surrounding the exhaust port of the cylinder head, and the second coolant passage is fluidly separated from the first coolant passage.

A vehicle propulsion system includes an engine having a coolant inlet and a coolant outlet, a coolant pump having an outlet in communication with the engine coolant inlet, a pressure sensor in fluid communication with the engine coolant outlet and that generates a pressure signal indicative of a pressure in the engine coolant outlet, and a controller in communication with the pressure sensor and the coolant pump. The controller is programmed to control a flow of coolant through the engine from the coolant pump based upon the pressure signal.

An engine (2) of a hybrid vehicle (1) is configured to operate along a prescribed operation line in an operation property diagram of the engine. In addition to a first operation line (A) that optimizes fuel economy, a second operation line (B) that minimizes undesired emission of particulate matter is defined. The two operation lines substantially coincide with each other in a certain region of the diagram. A control unit (7) of the vehicle switches the operating condition between the first operation line and the second operation line when the first operation line and the second operation line substantially coincide with each other.