Abstract: A fuel heater including an engine that is driven by combustion of air-fuel mixture including air and fuel supplied to a combustion chamber within a cylinder, a battery that stores electricity, and a motor that drives the engine by the electricity supplied from the battery, the fuel heater includes a fuel heating portion heating the fuel with the electricity supplied from the battery, and a controller performing one of a first control by increasing the amount of electricity supplied from the battery to the fuel heating portion and a second control by increasing heating time of the fuel by the fuel heating portion for a time period until the engine starts in a case where a battery charge remaining of the battery is equal to or smaller than a remaining threshold value at a start of the engine.

Abstract: An air intake apparatus of an internal combustion engine includes a port portion into which fuel injected form an injection opening of an injector is introduced, an intake passage provided at an inner side of the port portion to flow an air-fuel mixture including the fuel and air, the air-fuel mixture being supplied to a cylinder provided at the internal combustion engine, and a port heater provided along an inner surface of the port portion to vaporize the fuel introduced into the intake passage. The port heater includes regions with different heat generation amounts from each other in accordance with a distribution of an adhesion amount of the fuel injected from the injection opening of the injector to the inner surface of the port portion.

Abstract: An air intake apparatus for an internal combustion engine includes an outer port member facing an inner surface of a suction port, an inner port member arranged inside the outer port member, and a heater arranged inside the inner port member. The inner port member is stacked on an outside of the heater in a direction orthogonal to an intake flow direction of the suction port, and is configured to insulate heat from the heater.

Abstract: An air intake apparatus for an internal combustion engine, the air intake apparatus includes: an air intake apparatus main body portion introducing air into a cylinder; a port portion provided integrally with a downstream side end portion of the air intake apparatus main body portion and inserted into an air intake port in a cylinder head; an air intake passage formed inside the air intake apparatus main body portion and the port portion, and through which an air-fuel mixture containing air and fuel flows; an injector provided in the air intake apparatus main body portion and introducing the fuel into the air intake passage; and a heater heating the fuel introduced by the injector. The injector is disposed at a position where the fuel is capable of being injected into the heater.

Abstract: An air intake apparatus for an internal combustion engine, the air intake apparatus includes: an air intake apparatus main body portion introducing air into a cylinder; a port portion provided integrally with a downstream side end portion of the air intake apparatus main body portion and inserted into an air intake port in a cylinder head; an air intake passage formed inside the air intake apparatus main body portion and the port portion, and through which an air-fuel mixture containing air and fuel flows; an injector provided in the air intake apparatus main body portion and introducing the fuel into the air intake passage; and a heater heating the fuel introduced by the injector. The injector is disposed at a position where the fuel is capable of being injected into the heater.

Abstract: A blowby gas treatment device is configured to discharge blowby gas inside an internal combustion engine to an intake passage inside an intake manifold. The blowby gas treatment device includes a blowby gas passage, a flow control valve, a communication hole, and a lid. The blowby gas passage includes an engine gas passage and an intake manifold gas passage. The communication hole is provided in the intake manifold. The communication hole is configured to connect outside of the intake manifold and a part of the intake manifold gas passage on a downstream side of the flow control valve in a gas flow direction. The communication hole opens the intake manifold gas passage to the atmosphere. A lid is configured to open and close the communication hole.

Abstract: A blowby gas treatment device is configured to discharge blowby gas inside an internal combustion engine to an intake passage inside an intake manifold. The blowby gas treatment device includes a blowby gas passage, a flow control valve, a communication hole, and a lid. The blowby gas passage includes an engine gas passage and an intake manifold gas passage. The communication hole is provided in the intake manifold. The communication hole is configured to connect outside of the intake manifold and a part of the intake manifold gas passage on a downstream side of the flow control valve in a gas flow direction. The communication hole opens the intake manifold gas passage to the atmosphere. A lid is configured to open and close the communication hole.

Abstract: An intake system for an internal combustion engine includes plural intake pipes being configured to be connected to cylinders of a main body of the internal combustion engine, respectively, an external gas distribution portion distributing a single type of an external gas to each of the plural intake pipes, a main body of the intake system including the plural intake pipes and the external gas distribution portion, and an external gas introduction passage being integrally formed with the main body of the intake system, the external gas introduction passage being configured to connect the main body of the internal combustion engine to the external gas distribution portion of the main body of the intake system, the external gas introduction passage serving as a single passage being configured to introduce the external gas from the main body of the internal combustion engine to the external gas distribution portion.

Abstract: An intake manifold capable of discharging oil or water in a liquid reservoir in a stable manner includes an introduction section for introducing air to a combustion chamber of an engine, a liquid reservoir provided under the introduction section for retaining a liquid medium, a differential pressure tank including a first chamber, a second chamber, and a differential pressure valve for regulating flow from the second chamber to the first chamber, a return passage for allowing the liquid medium accumulated in the liquid reservoir to return to the first chamber from the liquid reservoir when the pressure in the second chamber is higher than the pressure in the first chamber, and an exhaust passage for discharging the liquid medium having flown into the second chamber from the first chamber to the instruction section when the pressure in the second chamber is lower than the pressure in the first chamber.

Abstract: An intake manifold capable of discharging oil or water in a liquid reservoir in a stable manner includes an introduction section for introducing air to a combustion chamber of an engine, a liquid reservoir provided under the introduction section for retaining a liquid medium, a differential pressure tank including a first chamber, a second chamber, and a differential pressure valve for regulating flow from the second chamber to the first chamber, a return passage for allowing the liquid medium accumulated in the liquid reservoir to return to the first chamber from the liquid reservoir when the pressure in the second chamber is higher than the pressure in the first chamber, and an exhaust passage for discharging the liquid medium having flown into the second chamber from the first chamber to the instruction section when the pressure in the second chamber is lower than the pressure in the first chamber.