Title: Experimental Research on Knock Suppression of Turbocharged DI Gasoline Engine Based on LIVC and Dual-VVT Technology
Abstract:On a turbocharged in-cylinder DI gasoline engine,the dual VVT technology and late intake valve closing(LIVC) camshaft were used to suppress the knock.After the knock suppression,a higher geometric com...On a turbocharged in-cylinder DI gasoline engine,the dual VVT technology and late intake valve closing(LIVC) camshaft were used to suppress the knock.After the knock suppression,a higher geometric compression ratio was adopted to improve the heat efficiency and fuel economy.The result shows that the fuel economy can be greatly improved under the conditions of 1 300 r/min and 200 N·m by decreasing the valve overlap and reducing the engine sweeping.Based on the original 9.3 compression ratio,the ignition angle is advanced,which is close to the ignition angle of maximum torque.Increasing the geometric compression ratio from 9.3 to 10.9,the knock intensity is equivalent to the original,but the heat efficiency and hence fuel economy are improved significantly.Read More
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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Cited By Count: 1
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