Secondary air injection

About: Secondary air injection is a research topic. Over the lifetime, 11452 publications have been published within this topic receiving 112147 citations.

Two stroke cycle internal combustion engines

Abstract: A two stroke cycle engine 10 with an exhaust gas treatment catalyst. Separate reducing and oxidizing catalyst portions 126 and 127 are provided to treat different portions of the exhaust gas exhausted during each exhaust period. The portion of the exhaust gas high in NOx, usually that first exhausted upon initial opening of the exhaust port, is directed to be treated by the reducing catalyst 126 and the remainder of the exhaust gas is directed to be treated by the oxidizing catalyst 127.

Exhaust gas purifying method, exhaust gas purifying apparatus, and exhaust gas collecting apparatus of internal combustion engine

Abstract: To restrict the discharging of harmful components immediately after the starting of an internal combustion engine, an exhaust gas collecting apparatus of an internal combustion engine comprises: a collection vessel that can hold exhaust gas; an exhaust gas taking-out passage through which exhaust gas is introduced from an exhaust passage to the collection vessel; an exhaust gas introduction passage through which the exhaust gas is introduced from the collection vessel to the exhaust passage at a position upstream from the catalytic converter; a switching valve that is switchable between a position where the introduction of the exhaust gas from the exhaust passage to the exhaust gas taking-out passage is permitted and a position where the introduction of the exhaust gas is prevented; and an open/close valve that is switchable between a position where the introduction of the exhaust gas through the exhaust gas introduction passage is permitted and a position where the introduction of the exhaust gas is prevented. The switching valve is controlled such that at least a part of the exhaust gas discharged from an internal combustion engine is collected into the collection vessel through the exhaust gas taking-out passage during a period from a starting time of the internal combustion engine to satisfaction of a predetermined collection terminating condition.

Condenser in a turbo-compressor system and method for operating one such system

Abstract: The invention relates to an system, especially a turbo-compressor system pertaining to a motor vehicle comprising an internal combustion engine with exhaust gas recirculation. Said system comprises an exhaust gas cooler (2) and a charge-air cooler (L) for cooling recirculated exhaust gases and/or charge air, a compressor (V) for compressing the charge air, and at least one condenser (3).

Exhaust gas flow device

Abstract: A flow device for an exhaust treatment system includes a base and at least one flow deflector tube secured to the base. The flow deflector tube includes a flow inlet, a flow outlet, and a passage that extends through the flow deflector tube from the flow inlet to the flow outlet. The flow outlet is at an angled orientation to the flow inlet. A method of mixing reactants and exhaust in an exhaust treatment system includes the steps of injecting reactants into exhaust gases flowing through an exhaust conduit used to convey the exhaust gases from an engine. Bent tubes are disposed in the exhaust conduit and used to mix the exhaust gases and the reactants.