A valve control Method of four-stroke diesel engines

The invention of the fourth present invention relates to a valve control method for a stroke diesel engine, to reduce the dwell period of the exhaust valve and increase by giving, scavenging process when small amount to slow down the closing timing of the exhaust valve to increase the valve overlap period combustion chamber components dropping the temperature of the exhaust gas temperature, and relates to a valve control method for a four-stroke diesel engine to lower the engine heat load. The present invention controls the intake / exhaust valve in accordance with the crank angle than the exhaust valve and shows the opening and closing distance of the intake valve opening period and the intake of the 4-stroke diesel engine comprising a dwell period and the closed period / exhaust valve lift geometry for achieving the above object, in the valve control method, the open period of the exhaust valve lift is formed from a crank angle of 135˚ and lifting distance of the exhaust valve is lifted up to 0.8mm point distance of the point where the crank angle is 17.5mm and the exhaust valve 210˚ and the dwell period is a crank angle of 210˚ and forms at the point where the distance is 17.5mm lifting of the exhaust valve up to the point where the crank angle is 288˚ and lifting distance of the exhaust valve is 17.5mm, the closed section is a crank angle 288˚ and and at the lifting distance of the exhaust valve is 17.5mm point crank angle of 427˚ and a lifting distance of the exhaust valve so as to form a point to 0.8mm , The open period of the intake valve lift, the crank angle is 342˚ and from the lifting distance of the exhaust valve is 0.8mm point crank angle of 422˚ and a lifting distance of the exhaust valve is formed to 17.5mm in point, the dwell period is crank angle 422˚ and forms at the point where the distance is 17.5mm lifting of the exhaust valve up to the point where the crank angle is 450˚ and lifting distance of the exhaust valve is 17.5mm, the closed section is the crank angle and the lift of the exhaust valve 450˚ crank angle is 530˚ at a distance of 17.5mm and spot to the lifting distance of the exhaust valve is to be formed up to a 0.8mm spot, by increasing the closing period and duration of the valve overlap period is a period in which the open cross of the intake valve of the exhaust valve and to give a technical base. Exhaust valve lift, the intake valve lift, the valve overlap period, the open period, the dwell period, the closed sections