A cooling control system for an internal combustion engine, which is capable of efficiently driving an electric water pump, thereby improving fuel economy as much as possible while properly performing cooling of supercharged intake air by an intercooler. The engine to which the present invention is applied includes a turbocharger for supercharging intake air and is configured such that electrical power is generated by a generator using the engine as a motive power source, during a decelerating fuel-cut operation in which fuel supply is stopped. The cooling control system of the present invention includes the intercooler of water-cooled type which cools the intake air supercharged by the turbocharger by using coolant circulating through an intake air cooling circuit and an electric pump for circulating the coolant through the intake air cooling circuit, and drives the electric pump during the decelerating fuel-cut operation.

A cooling system for cooling diesel exhaust fluid (DEF) for an off-road vehicle is provided. The system includes a DEF tank configured to hold DEF. The system includes a cooling interface configured to interface with the DEF. The system further includes a thermoelectric device disposed exterior to the DEF tank, wherein a first portion of the thermoelectric device is coupled to the cooling interface. The thermoelectric device is configured to draw heat from the cooling interface to cool the DEF. The system still further includes a heat sink coupled to a second portion of the thermoelectric device opposite the first portion. The heat sink is configured to draw heat away from the thermoelectric device.

A marine engine has a crankcase containing lubricant; an intake plenum for conveying intake air for combustion in the marine engine; and a cooling apparatus located between the crankcase and the intake plenum. The cooling apparatus is configured to cool both the lubricant in the crankcase and the intake air in the intake plenum.

A marine outboard motor is provided with an internal combustion engine comprising an engine block defining at least one cylinder, an air intake configured to deliver a flow of air to the at least one cylinder; and an air intake duct forming part of an air intake path for delivering the flow of air to the air intake. The engine further includes a flow sensing arrangement located in the air intake duct and comprising a flow meter configured to generate a signal indicative of a flow rate of the flow of air through the air intake duct, and a bluff body located in the air intake duct upstream of the flow meter, wherein the flow meter is a vortex shedding flow meter.

An EGR system is configured to allow a part of exhaust gas discharged from an engine to an intake passage to flow as EGR gas to an intake passage through an EGR passage to return to the engine. In the EGR system, a heating film is provided on an inner wall or an outer wall of at least one of the intake passage through which the EGR gas is allowed to flow and the EGR passage. At least a pair of a positive electrode and a negative electrode is provided to energize the heating film.

An intercooler of a vehicle includes a plurality of tubes arranged straight so that a charging air passes through the tubes, a shutter installed to open and close inlets of at least two of the tubes as the tubes move straight along a direction in which the tubes are arranged, and an actuator provided to move the shutter straight. The plurality of tubes are divided into adjustment tubes that can be opened and closed by the shutter and cooling tubes that are always opened regardless of the shutter, and the adjustment tubes are located on lower sides of the cooling tubes.

The invention relates to a fluid pipe arrangement (100), in particular for a charged air duct of an internal combustion engine, comprising a housing (10) having a longitudinal extension (L). The housing (10) includes a first fluid duct (20) having a first fluid inlet (22) and a first fluid outlet (24) for a first fluid and at least one second fluid duct (30) having a second fluid inlet (32) and a second fluid outlet (34) for a second fluid. Thermal insulation means (40) are provided between at least a portion (38) of the second fluid duct (30) and at least a portion (28) the first fluid duct (20).

An engine peripheral structure includes an engine body mounted in an engine room, an intake system connected to the engine body, and a supercharger provided in the middle of the intake system. The intake system includes a low-pressure intake passage connected upstream in an intake direction of the supercharger, and a high-pressure intake passage connected downstream in the intake direction of the supercharger. The intake system has the high-pressure intake passage turned back at the supercharger with respect to the low-pressure intake passage, and has the low-pressure intake passage and the high-pressure intake passage extended on a left side surface of the engine body so as to be at least partly overlapped with each other in the up-down direction V.

An intake air filter box utilizing an intake air heater that inhibits the buildup of snow and ice within the intake air filter box, keeping the associated flow passages clear such that pressure loss is not adversely affected. This intake air heater can include an electric heater or a radiant heater coupled to the exhaust gas recirculation (EGR) system of the vehicle, or to another source of heated fluid. Preferably, the intake air heater is disposed on the “dirty” side of the filter disposed within the intake air filter box, adjacent to the intake air conduit and air intake of the vehicle. This is where the snow and ice accumulation occurs. A drain is provided in the bottom of the intake air filter box housing to allow the escape of water from the melted snow and ice, ensuring that this moisture is not delivered to the turbocharger and engine with the intake air.

An internal combustion gasoline engine includes an air heater coupled to an intake duct of the engine in a heat transfer relationship with air in the intake duct. A combustion pre-chamber is also formed in the head of the engine. The pre-chamber is at least partially separated from the combustion chamber by a wall. One or more apertures are formed through the wall and provide fluid communication paths from the combustion chamber to the pre-chamber, feeding a mixture of air and fuel from the combustion chamber to the pre-chamber. The apertures further define a plurality of combustion paths allowing ignited fuel and air from the pre-chamber to efficiently enter and combust the fuel and air mixture within the combustion chamber. The air heater and the combustion pre-chamber increase combustion efficiency from a first efficiency level to a second efficiency level greater than the first efficiency level.