An intake assembly for an internal-combustion engine includes an intake duct for each cylinder, which communicates with an airbox that includes a filtering element. Each intake duct communicates with the airbox by a respective throttle body. A monitoring channel connects the intake ducts together and is configured for perturbing in a negligible way the dynamics of the fluid inside the intake ducts. Associated to said monitoring duct are sensors for monitoring the pressure inside the monitoring duct and designed to send signals indicating the value of pressure of the fluid taken in by the engine to an electronic control unit.

The present invention refers to a spacer for use in an air intake system of an internal combustion engine for delimiting an intake duct between an intake manifold and a cylinder head of the engine, wherein the spacer is provided with at least one flow-through passage and at least one air-accumulation cavity which are fluid-communicatively connected and constitute the intake duct.

An assembly for a snowmobile includes an airbox having a plenum for coupling to a throttle body of an engine and two branches defining openings for air intake. A storage box is mounted between the two branches and defines area for receiving a console. The airbox is part of a hood of the vehicle and includes an opening over a storage box. The disclosure also includes a ribbed bumper mount with a latch assembly for securing the hood.

A device is provided, which controls a vehicle-mounted engine provided with an engine body with a plurality of cylinders, a plurality of independent intake passages, each connected to the engine body so as to communicate with a combustion chamber of each cylinder via an intake port, and a surge tank connected to an upstream end of each independent intake passage. The device includes a phase changer, an ambient temperature sensor, and a controller configured to acquire an amount of condensate water existing in the surge tank. When the engine is stopped in a situation where the ambient temperature is lower than a given reference temperature and the condensate water amount is above a given reference amount, the controller controls the phase changer so that a lift amount of an intake valve in each cylinder of the stopped engine becomes outside a given minute lift range.

An assembly for a snowmobile includes an airbox having a plenum for coupling to a throttle body of an engine and two branches defining openings for air intake. A storage box is mounted between the two branches and defines area for receiving a console. The airbox is part of a hood of the vehicle and includes an opening over a storage box. The disclosure also includes a ribbed bumper mount with a latch assembly for securing the hood.

The present invention refers to a spacer for use in an air intake system of an internal combustion engine for delimiting an intake duct between an intake manifold and a cylinder head of the engine, wherein the spacer is provided with at least one flow-through passage and at least one air-accumulation cavity which are fluid-communicatively connected and constitute the intake duct.

The intake control apparatus (1) includes a body (4) which integrally includes intake pipes (2a) and (2b). The body (4) includes a linear bypass passage (10a), which passes through thereinside, one end of which opens upstream of a valve body (5) of the intake pipe (2a), and the other end of which opens downstream of the valve body (5) of the intake pipe (2b).

An engine component includes a tubular member, of stratified layers, curved on both ends and comprising outwardly protruded nozzles located on one side. Each of the nozzles comprising an elongated body and a tip defining apertures. The tubular member forms a nitrous oxide delivery apparatus configured to increase an internal combustion engine's power output and is located in a cavity of an intake manifold such that there is no seal between the member and the manifold.

Synergistic induction and turbocharging includes the use of one or more throttles in close proximity to each cylinder intake valve to control air flow in each intake port delivering air to combustion cylinders in an internal combustion engine system. A turbocharger may also be affixed in close proximity to each cylinder exhaust valve to enable a synergistic combination of hyper-filling cylinders with combustion air and immediate harvesting of exhaust gas by adjacent turbochargers. In some implementations the turbochargers may be low-inertia turbochargers. The combination of individual throttles per intake port and a turbocharger in close proximity to each cylinder enables faster ramp-up of an engine in the early stages of acceleration. Various implementations thus provide improved fuel economy and improved engine performance in tandem, instead of one at the expense of the other.

An engine component includes a tubular member, of stratified layers, curved on both ends and comprising outwardly protruded nozzles located on one side. Each of the nozzles comprising an elongated body and a tip defining apertures. The tubular member forms a nitrous oxide delivery apparatus configured to increase an internal combustion engine's power output and is located in a cavity of an intake manifold such that there is no seal between the member and the manifold.