Browse Publications Technical Papers 2019-01-0223
2019-04-02

Influence of Intake Valve Lift on Flow Capacity of Intake Port 2019-01-0223

A three-dimensional model of a diesel engine intake port was established and was verified by steady-flow test. Based on this model, the influence of intake valve lift on the flow capacity of intake port was studied and a design method of maximum valve lift was put forward. The results show that, under different intake pressure and relative pressure difference conditions, the discharge coefficient increases first and then converges with the increase of valve lift. Under the same valve lift condition, with the increase of relative pressure difference, the discharge coefficient decreases slightly in subsonic state and decreases sharply from subsonic state to supersonic state, but the mass flow rate increases slightly. The optimum ratio of valve lift and valve seat diameter is related to relative pressure difference, it increases first and then keeps constant with the increase of relative pressure difference. When the optimum maximum valve lift is design, The optimum maximum valve lift at the working condition of maximum relative pressure difference can be used as the optimum value in the whole working conditions.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Modelling of Gasoline and Ethanol Hollow-Cone Sprays Using OpenFOAM

2011-01-1896

View Details

STANDARD

Valve, Air, High Pressure Charging, 5000 psi

AS28889A

View Details

STANDARD

Hydraulic Directional Control Valves, 3000 psi Maximum

J748_201912

View Details

X