A control device of an engine is provided. The engine is operated at a high compression ratio, a geometric compression ratio of the engine being 14:1 or higher. The control device includes a fuel injection controller for controlling a fuel injector of the engine to start a fuel injection in a latter half of a compression stroke within an engine operating range where an engine speed is below a predetermined value and an engine load is above a predetermined value, and an ignition controller for controlling an ignition plug of the engine to retard an ignition timing when a timing for the fuel injection controller to start the fuel injection is on a retarding side of a predetermined timing, the ignition timing being retarded based on a retarding amount of the fuel injection start timing from the predetermined timing.

Charge air coolers (CACs) are commonly used in pressure-charged, internal combustion engines to reduce the temperature of the air entering the combustion chamber. Typically, one CAC is provided and all of the intake air is inducted past the one CAC. An intake manifold in which a plurality of CACs are provided in the intake runners, i.e., a parallel flow arrangement, is disclosed herein. By positioning the CACs in the intake runners, the CACs are more effective than when they are positioned upstream in the plenum. In some embodiments, the coolant is supplied and returned to the multiple CACs via headers. By providing coolant to each CAC that is substantially the same temperature, the cylinder-to-cylinder temperature variation is reduced compared to a single CAC.

An EGR apparatus includes a EGR passage and an EGR valve provided in the EGR passage to regulate an EGR flow rate in the EGR passage. An ECU closes the EGR valve from an open state prior to start of deceleration of the engine based on engine rotation speed detected by a rotation speed sensor, accelerator opening degree detected by an accelerator sensor, and actual opening degree of the EGR valve. During deceleration of the engine, the ECU obtains a target opening degree of the EGR valve according to the separately detected engine rotation speed and accelerator opening degree from a target opening degree map and starts to close the EGR valve when a difference between an actual opening degree and the target opening degree of the EGR valve exceeds a predetermined value.

An induction system for a supercharged internal V-type combustion engine includes a monolithic continuous unitary casting housing a supercharger with a rotor and gear assembly operative to discharge pressurized air to a common bounding receiving plenum, through a first slidably-removable intercooler providing a first cooling, and then to a pair of second side intercoolers providing a second cooling within the bounded plenum and in fluid communication therewith. First and second intercoolers are secured within the monolithic housing. The monolithic housing provides a robust and stable housing of light weight and allows an exterior air cooling as well. Side walls of the supercharger are separate from and are spaced from air intake runners of a cylinder block. Air in the plenum is additionally cooled by convective surface cooling while being guided in an appropriate direction. The intercoolers are plumbed in parallel allowing for enhanced temperature management of the air flow in combination with the convective cooling. The monolithic housing includes rib elements for sound attenuation and strength while minimizing weight. This arrangement allows for enhanced cooling, and simplifies manufacture and service.

Systems are provided for a combined compressor-cooling unit for an intake system. In one example, the system includes a housing, with a compressor, a liquid cooling system, a filter, and an air intake arranged within the housing such that the filter encases the compressor at least in part.

Provided is an engine system. The engine system includes a mixer mixing air and vaporized fuel to form a mixture, an engine driving a cylinder with the mixture discharged from the mixer, a first storage tank supplying the vaporized fuel to the mixer, a second storage tank storing liquid fuel or supplying the stored liquid fuel to the first storage tank, and a heat exchanger performing heat exchange between the liquid fuel discharged from the first storage tank and gas flowing to the engine, thus vaporizing the liquid fuel.

Embodiments of methods and systems related to operating a mobile asset are provided. In one example, a method for operating a mobile asset includes adjusting a fuel combustion ratio of a plurality of mobile assets based on an emission type exceeding a corresponding threshold, wherein the fuel combustion ratio includes a plurality of fuel types.

Provided is a control device for an internal combustion engine that includes: a water-cooled cooler (intercooler) arranged at at least one of a portion of an intake air passage located on the upstream side of an intake port and an EGR passage; and a water pump configured to supply a cooling water with the cooler. The control device is configured: to execute a water supply operation that supplies the cooling water with the cooler by actuating the water pump when its execution condition which includes a requirement that a cooler temperature is higher than a cooling water temperature is met during stop of the internal combustion engine; and not to execute the water supply operation when the cooler temperature is lower than or equal to the cooling water temperature during stop of the internal combustion engine.

An engine includes: two cylinder rows so placed as to be aligned side by side; a turbocharger; and an intercooler shared by the two cylinder rows, and connected to the turbocharger. The intercooler has: a cool liquid flow path through which a cool liquid flows, and an intake air flow path through which intake air from the turbocharger flows. The cool liquid flow path has an inlet and outlet of the cool liquid on one side in a first direction along the flow of the cool liquid. The intake air flow path has an inlet of the intake air on one side in a second direction along the flow of the intake air, and an outlet of the intake air on another side.

Provided is an engine system. The engine system includes a mixer mixing air and vaporized fuel to form a mixture, an engine driving a cylinder with the mixture discharged from the mixer, a first storage tank supplying the vaporized fuel to the mixer, a second storage tank storing liquid fuel or supplying the stored liquid fuel to the first storage tank, and a heat exchanger performing heat exchange between the liquid fuel discharged from the first storage tank and gas flowing to the engine, thus vaporizing the liquid fuel.