The Study of an Optimum Method for Inlet Port Performance in a D.I. Diesel Engine

1995 ◽  
Author(s):  
Guorong Qi ◽  
Junjie Zhou ◽  
Zhengbai Liu ◽  
Jiahua Chen
Keyword(s):  
Diesel Engine ◽  
Inlet Port

Effect of Shroud and Orientation Angles of Inlet Valve on Flow Characteristic Through Helical–Spiral Inlet Port in Diesel Engine

2017 ◽  
Vol 139 (10) ◽  
Author(s):  
A. Abd El-Sabor Mohamed ◽  
Saleh Abo-Elfadl ◽  
Abd El-Moneim M. Nassib
Keyword(s):  
Diesel Engine ◽  
Three Dimensional ◽  
Orientation Angle ◽  
Combustion Efficiency ◽  
Inlet Valve ◽  
Maximum Increase ◽  
Inlet Port ◽  
A Value ◽  
Engine Cylinder ◽  
Dimensional Simulation

The in-cylinder airflow motion is an important factor that severely affects combustion efficiency and emissions in diesel engines. It is greatly affected by the inlet port and valve geometries. A diesel engine cylinder with a helical–spiral inlet port is used in this study. An ordinary inlet valve and shrouded inlet valve having different shroud and orientation angles are used to study the shroud effect on the swirl and tumble motion inside the engine cylinder. Four shroud angles of 90 deg, 120 deg, 150 deg, and 180 deg are used. With each shroud angle, four orientation angles of 0 deg, 30 deg, 60 deg, and 90 deg are also used. Three-dimensional simulation model using the shear stress transport (SST) k–ω model is used for simulating air flow through the inlet port, inlet valve, and engine cylinder during both the intake and compression strokes. The results showed that increasing the valve shroud angle increases the swirl, and the maximum increase occurs at a valve shroud angle of 180 deg and orientation angle of 0 deg with a value of 80% with respect to the ordinary valve. But it decreases the volumetric efficiency, and the maximum decrement occurs at valve shroud of 180 deg and orientation angle of 90 deg with a value of 5.98%. Variations of the shroud and orientation angles have very small effect on the tumble inside the engine cylinder.

scholarly journals Scavenging the 2-Stroke Diesel Engine : Effect of Inlet Port-Angle on Scavenging Process of a Through Scavenging System

1960 ◽  
Vol 3 (9) ◽  
pp. 130-136 ◽  
Author(s):  
Shunichi OHIGASHI ◽  
Yukio KASHIWADA ◽  
Jiro ACHIWA
Keyword(s):  
Diesel Engine ◽  
Inlet Port ◽  
Port Angle

Effects of Different Deviations of Helical Inlet Port on Performance

2012 ◽  
Vol 516-517 ◽  
pp. 888-891 ◽  
Author(s):  
Xue Dong Zhang ◽  
Ping Sun ◽  
Wen Xia Lu ◽  
Li Hua Ye
Keyword(s):  
Numerical Simulation ◽  
Diesel Engine ◽  
Flow Characteristics ◽  
Inlet Port ◽  
Axial Deviation ◽  
Solid Models

In this paper, the helical inlet port of CZ4B26 diesel engine is studied. Its3-D solid models of port with the axial deviation and rotated port are made to research the effect on helical inlet port performance. Based on the validation of CFD precision by test, the numerical simulation of flow characteristics in ports-valve-cylinder system is carried out. The results showed that the axial deviation of the port and rotated port have a range of effects on the performance of inlet port.

Turbulence Spectrum Investigation in a DI Diesel Engine with a Reentrant Combustion Bowl and a Helical Inlet Port

1996 ◽  
Author(s):  
Andrea Emilio Catania ◽  
Claudio Dongiovanni ◽  
Antonio Mittica ◽  
Claudio Negri ◽  
Ezio Spessa
Keyword(s):  
Diesel Engine ◽  
Turbulence Spectrum ◽  
Inlet Port ◽  
Di Diesel Engine ◽  
Spectrum Investigation

Optimization of Inlet Port Performance on Emission Compliance of Naturally Aspirated DI Diesel Engine

2005 ◽  
Author(s):  
Yashodhan Kulkarni ◽  
Manasi Mone ◽  
Asit Desai ◽  
Saurabh Markandeya ◽  
Nagaraj Nayak ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Inlet Port ◽  
Di Diesel Engine

Effects of Inlet Port Auxiliary Fuel Injection on the Startability of the Diesel Engine

2009 ◽  
Vol 23 (12) ◽  
pp. 5830-5834 ◽  
Author(s):  
Zhongchang Liu ◽  
Yan Su ◽  
Yongqiang Han ◽  
Liang Guo ◽  
Changming Gong ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Inlet Port
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