The exhaust-gas flap (11) and intake flap (10) are pivoted in the same direction only above a provided pivoting angle.

During driving of the exhaust-gas flap (11), the intake flap (10) is first of all pivoted in the opposite direction via the coupling rod (15).

In the head-on collision, the valve element (63) of a gas leak valve (60) advances to close the gas leak valve (60).

A muffler device with an exhaust gas purifying function (1), having an injection nozzle (12) and a reduction catalyst (14).

The exhaust gas purification device is characterized by comprising a plasma reactor (30) of the invention and a PM collector downstream from the exhaust gas flow.

The inventive apparatus is used principally to control exhaust emissions from an engine.

The exhaust gas housing is gastight and provides a gas cushion which retards the entrance of water through the discharge chamber into the exhaust passage of the engine, when the surfboard is not being operated.

Surrounding the impeller housing is an exhaust gas housing (33) which communicates with the exhaust gas passage (62) of the engine and with a discharge chamber (75) beneath the floor of the surfboard.

The gas entry port may include an optional one-way valve.

A unitary valve guard is disclosed for simultaneously accessing and protecting a gas cylinder valve, said valve guard comprising an integral eccentric base section for engaging a gas cylinder.

Exhaust Gas Recirculation (EGR) - System to reduce emissions of nitrogen oxides (Nox).

A check valve (25) is installed in the gas pipeline (24).

The present invention relates to a control valve designed to control the flow of a pressurised gas based on a comparison between the actual pressure of gas reaching the valve and a reference pressure.

An additional gas tap (19) may be pierced into the second valve (14).

The main discharge mechanism has a valve and discharges the laser gas from the laser gas flow path.