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•
29 Dec 1980
TL;DR: In this article, a baffle is used to convey a disturbed flow and/or change of the direction of flow of the exhaust gases in the exhaust pipe, which can be used to convert the harmful substances in said exhaust gases into harmless components.
Abstract: Baffle means coated with effective catalyts are positioned inside exhaust pipes to convert the harmful substances in said exhaust gases into harmless components. The baffle means impart a disturbed flow and/or change of the direction of flow of the exhaust gases in the exhaust pipe.
34 citations
Patent•
06 Apr 1990TL;DR: In this paper, a two-stroke cycle spark ignition cylinder fuel injection engine is provided with an exhaust emission control system that separately treats hot blowdown gases and uses the hot treated gases to warm the scavenging gases for further treatment.
Abstract: A two-stroke cycle spark ignition cylinder fuel injection engine is provided with an exhaust emission control system that separately treats hot blowdown gases and uses the hot treated gases to warm the scavenging gases for further treatment. Various exhaust gas separation concepts are described for use in separating the blowdown and scavenging portions of the exhaust gas discharged from the cylinder exhaust ports.
34 citations
Patent•
06 Aug 2008TL;DR: In this paper, a fuel injection device includes an injection valve for injecting fuel, which is distributed from a pressure-accumulation vessel, and a pressure sensor is located in a fuel passage to detect pressure of the fuel.
Abstract: A fuel injection device includes a fuel injection valve for injecting fuel, which is distributed from a pressure-accumulation vessel. A pressure sensor is located in a fuel passage, which extends from the pressure-accumulation vessel to a nozzle hole, and configured to detect pressure of the fuel. The pressure sensor is located closer to the nozzle hole than the pressure-accumulation vessel. A storage unit stores individual difference information, which indicates an injection characteristic of the fuel injection valve, the injection characteristic being obtained by an examination. The individual difference information is related to a fluctuation pattern of a portion of the fluctuation in detected pressure waveform of the pressure sensor. The fluctuation is attributed to one fuel injection through the nozzle hole. The portion of the fluctuation is subsequent to an end of the fuel injection.
34 citations
Patent•
23 Feb 2005
TL;DR: A vehicle thermal management system includes an exhaust gas cooler configured to receive exhaust gas from the engine and to cool the exhaust gas before it is recirculated back into the engine.
Abstract: A vehicle thermal management system includes an exhaust gas cooler configured to receive exhaust gas from the engine and to cool the exhaust gas before it is recirculated back into the engine. A valve is located downstream from the exhaust gas cooler, and is operable to control the amount of exhaust gas passing through the exhaust gas cooler. Intake air mixes with the exhaust gas downstream from the first valve. The mixed gas is then cooled by a mixed gas cooler before it enters the engine intake manifold. A coolant is circulated through the mixed gas cooler and a heat exchanger. The mixed gas rejects heat to the coolant via the mixed gas cooler, and the coolant rejects heat to the ambient air via the heat exchanger.
34 citations
TL;DR: The secondary air injection generating swirling flow enhanced the mixing between the gas phase components as well as the solid phase components, and improved the combustion efficiency by increasing the carbon conversion rate and reducing pollutant emissions.
34 citations