Topic
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.
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Patent•
07 Feb 1991
TL;DR: In this article, a firefighting apparatus specially adapted to deliver pressurized foam to a target surface is described. The apparatus includes a unique air injection mixer in which the air discharge nozzles are oriented at oblique angles to the stream flow.
Abstract: Firefighting apparatus specially adapted to deliver pressurized foam to a target surface. The apparatus includes a unique air injection mixer in which the air discharge nozzles are oriented at oblique angles to the stream flow. The aspirated air causes the foam to expand in the mixer without loss of force through generated turbulence to increase the pumping efficiency of the apparatus.
50 citations
Patent•
18 Nov 1985
TL;DR: In this article, the authors present an exhaust system for a multi-cylinder internal combustion engine, which is divided by partitioning wall or walls into separate channels extending at least partway of the tailpipe from its inlet end and with which the outlets of the primary exhaust channels in the manifold are separately connected.
Abstract: An exhaust system for a multi-cylinder internal combustion engine has a tailpipe (13) which is divided by a partitioning wall or walls (14, 15) into separate channels extending at least part-way of the tailpipe from its inlet end and with which the outlets of the primary exhaust channels in the manifold are separately connected. The structure of the exhaust system enables the exhaust system to be easily packaged within the engine compartment of a car, while enabling the lengths of the exhaust channels to be selected to enable advantage to be taken of the resonance phenomena for optimisation of the engine torque and other engine characteristics.
50 citations
24 Sep 2001
49 citations
01 Feb 1995
49 citations
TL;DR: In this article, the effects of water injection quantity and injection timing on engine performance and exhaust emissions in a six-stroke engine were investigated, and the results showed that exhaust gas temperature and specific fuel consumption decreased by about 7% and 9% respectively.
49 citations