A system and method for removing condensate water of an intercooler for a hybrid vehicle are configured to improve combustion efficiency of an engine by supercharging intake air to a combustion chamber of the engine using an electronic compressor instead of an existing turbocharger and configured to backward drive the electronic compressor to distribute and capture the condensate water generated in the intercooler, especially, when the engine is turned off.

The present invention relates to an intake system for natural gas engine. An intake system for an engine is provided. A conduit is configured to direct a combustible mixture to a cylinder head. A mixing unit is coupled to the conduit. The mixing unit includes a fuel doser configured to dispense fuel into the conduit and a first mixer positioned downstream of the fuel doser. The first mixer is configured to mix air and the fuel. The mixing unit further includes a exhaust gas doser configured to dispense exhaust gas into the conduit and a second mixer positioned downstream of the exhaust gas doser. The second mixer is configured to mix the exhaust gas with the air and the fuel to make the combustible mixture. An air intake throttle is configured to direct the air into the mixing unit.

A crawled vehicle comprising: an internal combustion engine; an engine compartment wherein the internal combustion engine is housed; an air inlet opening to catch air from the outside of the crawled vehicle; a first channel, for cold air, connected and fed by the air inlet opening with air coming from outside the crawled vehicle; a second channel to be fed with hot air coming from the internal combustion engine; a third channel for air, coupled to the internal combustion engine to feed the internal combustion engine with air; an air filter arranged along the third channel and upstream of the internal combustion engine; a connection element connected to the first channel, to the second channel and third channel; and an air adjusting device to adjust the air temperature in the third channel and comprising a shutter coupled to the first channel and/or to the second channel and/or to the connection element; and a control device controlling a position of the shutter to adjust the temperature of the air entering the third channel.

An air induction system includes an air duct and an air permeable membrane. The air duct is configured to deliver intake air to an engine. The air duct includes a cylindrical wall defining a bore and an enclosure projecting from an outer radial surface of the cylindrical wall and defining a cavity therein. The cylindrical wall has an opening extending therethrough that enables airflow from the bore to the cavity in the enclosure. The air permeable membrane is configured to cover the opening in the cylindrical wall.

Engines and engine systems for managing blow-by gas and/or moisture therein, and methods of operating the same are disclosed. The engine systems may include an air intake system including a compressor such as a turbocharge and a charge air cooler. The engine system may also include an engine such as combustion engine have a crankcase. During combustion blow-by gas may be captured in the crankcase and recirculated back to the air intake system. The blow-by gas may be diluted by additional air such as fresh air prior to being recirculated. The system may also include a pump to facilitate recirculation.

An air intake amount measurement device 200 includes an intake distributor 3 distributing intake air CYL to cylinders 11, 12, 13, and 14, a temperature detector 202 detecting a temperature Ti of the intake air CYL, a pressure detector 201 for detecting a pressure Pi of intake air CL, and a computing unit 100 that computes an air intake amount mfcyl of the intake air CYL on the basis of the temperature Ti transmitted from the temperature detector 202 and the pressure Pi transmitted from the pressure detector 201. The temperature detector 202 detects the temperature Ti of the intake air CYL at a region W spanning, out of an inside of the intake distributor 3, a first branch portion 31 and a second branch portion 32.

An active purge system (APS) according to a driving state of a hybrid vehicle includes an active purge unit (APU) configured to pressurize a vaporized gas generated in a fuel tank of the hybrid vehicle and supply the pressurized vaporized gas to an intake pipe, and a control unit configured to control the APU, where the control unit gradually controls a processing amount of the vaporized gas according to the driving state of the hybrid vehicle. The processing amount of the vaporized gas is gradually controlled using the APS according to the driving state of the hybrid vehicle, particularly, a number of places at which slip occurs in a power transmission system of the hybrid vehicle so that degradation of driving ability due to the occurrence of slip is reduced.

Methods and systems are provided for reducing a possibility of hydrocarbon (HC) release to atmosphere from an evaporative emissions control (EVAP) system. In one example, a method may include, isolating a fuel vapor canister of the EVAP system from atmosphere and an engine intake manifold upon conditions being met for a potential hydrocarbon (HC) breakthrough from the fuel vapor canister.

An engine system in which blow-by gas with a specific gravity less than 1 with reference to air is generatable includes a cylinder block. The cylinder block includes a cylinder and a crank chamber which are arranged in an up/down direction, the crank chamber being positioned below the cylinder. An internal peripheral face of the cylinder block has a ventilation port that connects to a ventilation passage that connects an internal space of the crank chamber with an external space out of the cylinder block, and that is open. The ventilation port is placed above a center in the up/down direction in the crank chamber.

An apparatus that improves the gas mileage of an internal combustion engine in a vehicle is disclosed that is comprised of an air inlet, a condensation chamber, and an air outlet that is connected to the vehicle's oil system through an oil filler port in the engine of the vehicle.