An engine system capable of controlling an intake air flow includes a combustion chamber, an ignition plug, an intake air flow control valve, and a controller. The controller performs, in at least a part of an operating range, SPCCI combustion in which after jump-spark ignition combustion of a portion of a mixture gas inside the combustion chamber by a jump-spark ignition of the ignition plug, compression ignition combustion of the remaining mixture gas is carried out by a self-ignition. The controller strengthens, at least in a part of the operating range of SPCCI combustion, the intake air flow inside the combustion chamber by controlling the intake air flow control valve. The controller controls, in a middle-load range of the operating range where SPCCI combustion is performed, the intake air flow control valve so that the intake air flow becomes weaker than in a high-load range and a low-load range.

Methods and systems are provided for a heating device. In one example, a system comprises a heat exchanger and an air filter arranged in a common housing, wherein the heat exchanger is configured to receive coolant from a heating device. In one example, the heating device is an electric heating device.

An improved supercharger airflow intake that reduces air flow turbulence and provides an increase in the volume of airflow therethrough and into a vehicle supercharger, thereby increasing the efficiency and performance of the supercharger and thereby the engine of a vehicle.

An engine intake bypass system includes: an inlet pipe that supplies air, which passes through a throttle valve, to an intake manifold via a supercharging device along a first path, and directly supplies the air having passed through the throttle valve the intake manifold after bypassing the supercharging device along a second path; a bypass duct disposed in the second path to receive the air from the inlet pipe and deliver the air to the intake manifold in parallel; and a bypass valve installed to interrupt the air supplied to the bypass duct.

An engine intake bypass system includes: an inlet pipe that supplies air, which passes through a throttle valve, to an intake manifold via a supercharging device along a first path, and directly supplies the air having passed through the throttle valve the intake manifold after bypassing the supercharging device along a second path; a bypass duct disposed in the second path to receive the air from the inlet pipe and deliver the air to the intake manifold in parallel; and a bypass valve installed to interrupt the air supplied to the bypass duct.

An improved supercharger airflow intake that reduces air flow turbulence and provides an increase in the volume of airflow therethrough and into a vehicle supercharger, thereby increasing the efficiency and performance of the supercharger and thereby the engine of a vehicle.

A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.

A method of operating a forced induction gaseous-fueled engine includes mixing gaseous-fuel and engine intake air to form a mixture at a fuel mixer. The method includes delivering the mixture to an intake manifold by at least partially bypassing a charge air cooler.

An engine includes fuel system components provided on a cylinder head, a purge control valve that controls an amount of evaporated fuel purged to a portion of an intake passage on a downstream side of a throttle valve, and intake pipes that form the portion of the intake passage on the downstream side of the throttle valve and extend in a cylinder array direction, in which the purge control valve is disposed in front of the intake pipes and the fuel system components are disposed on an opposite side of the purge control valve across the intake pipes in vehicle front view or vehicle side view.

An air filter device for a motor vehicle is provided with a filter housing having an air inlet and an air outlet, a filter insert which is received in the filter housing and divides the inside of the filter housing into an untreated air section and a pure air section, and a bypass line for supplying air into the untreated air section. The bypass line extends from a connection opening in the filter housing to a cooler, especially a charge air cooler of the motor vehicle.