Results 191 to 200 of about 4,123 (231)

Experimental investigation of dwell time characteristics in high-pressure double-solenoid-valve fuel injection system

Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2019
The double-solenoid-valve fuel injection system consists of an electronic unit pump and an electronic injector. It can realize the separate control of fuel supply and injection and has the advantages of adjusting pressure by cycle and flexible controlling of the injection rate.
Dan Xu, Qing Yang, Xiaodong An, Baigang Sun, Dongwei Wu, Zhihao Zhang   +5 more
openaire   +1 more source

Synergy between Boost and Valve Timings in a Highly Boosted Direct Injection Gasoline Engine Operating with Miller Cycle

SAE Technical Paper Series, 2015
<div class="section abstract"><div class="htmlview paragraph">Gasoline engine downsizing has become a popular and effective approach to reduce CO₂ emissions from passenger cars. This is typically achieved in the form of a boosted direct injection gasoline engine, which are typically equipped with variable valve timing
Yuanping Li, Hua Zhao, Phil Stansfield, Paul Freeland   +3 more
openaire   +1 more source

Effects of Injection Timing on Transient Performance of A Regulated Two-Stage Turbocharged Diesel Engine with Turbine Bypass Valve

International Journal of Automotive Technology, 2018
The object of this paper is to reduce soot emissions under typical 5s transient conditions of constant speed and increasing torque. And effects of fuel injection timing on combustion and emissions parameters were experimentally and numerically studied in a regulated two-stage turbocharged diesel engine with a turbine bypass valve (TBV).
Zhong Chang Liu, Xing Yuan, Jing Tian, Yong Qiang Han, Kai Bo Yu, Peng Kun Teng   +5 more
openaire   +1 more source

Influences of Intake Charge Preparations on HCCI Combustion in a Single Cylinder Engine with Variable Valve Timing and Gasoline Direct Injection

SAE Technical Paper Series, 2006
<div class="htmlview paragraph">Intake charge preparation has strong effects on HCCI combustion, especially on the start of ignition. In this paper, the influence of different intake charge preparation modes on HCCI combustion in a single cylinder engine equipped with a hydraulic variable valve train (VVT) and gasoline direct injection (GDI ...
Yuan Shen, Ed King, Ulrich Pfahl
openaire   +1 more source

Effects of Combustion Phasing, Injection Timing, Relative Air-Fuel Ratio and Variable Valve Timing on SI Engine Performance and Emissions using 2,5-Dimethylfuran

SAE International Journal of Fuels and Lubricants, 2012
<div class="section abstract"><div class="htmlview paragraph">Ethanol has long been regarded as the optimal gasoline-alternative biofuel for spark-ignition (SI) engines. It is used widely in Latin and North America and is increasingly accepted as an attractive option across Europe. Nevertheless, its low energy density requires a high rate
Ritchie Daniel, Chongming Wang, Hongming Xu, Guohong Tian   +3 more
openaire   +1 more source

Development of New 1.6Liter Four Cylinder Turbocharged Direct Injection Gasoline Engine with Intake and Exhaust Valve Timing Control System

SAE Technical Paper Series, 2011
<div class="section abstract"><div class="htmlview paragraph">This paper describes a new 1.6-liter four-cylinder gasoline turbocharged engine with a direct injection gasoline (DIG) system and a twin continuously variable valve timing control (CVTC) system.
Masayuki Shimizu, Kazunori Yageta, Yoshinori Matsui, Takahiro Yoshida   +3 more
openaire   +1 more source

Combustion and emissions of a direct-injection diesel engine during cold start under different exhaust valve closing timing conditions

Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2008
The residual gas fraction has significant effects on combustion in a diesel engine. However, few researchers have studied the effects of the residual gas on startability and emissions of a diesel engine during cold start, in which the components of the residual gas fraction were very different from those under normal operating ...
H-Y Peng, Y Cui, K-Y Deng, L Shi, L-G Li
openaire   +1 more source

Reduction of pollutant emissions by developing a variable valve timing system in a direct injection diesel engine using computational fluid dynamics modeling

Environmental Progress & Sustainable Energy, 2016
In this work, the fluid flow in a direct injection compression ignition engine and its effects on performance and pollutant emissions are studied by using computational fluid dynamics simulation through developing of variable valve timing system by combination of the optimum valve lifting and late inlet valve closing (LIVC) strategies. For this purpose,
Abbas Zarenezhad Ashkezari, Alireza Hossein Nezhad, Said Farahat   +2 more
openaire   +1 more source

A Practice of Applying Downhole Real Time Gauge Data and Control-Valve Settings to Estimate Split Flow Rate for an Intelligent Injection Well System

SPE Annual Technical Conference and Exhibition, 2008
Abstract Because an Intelligent Well System (IWS) normally addresses multiple zones of production/injection, knowing the exact flow allocation for each controlled zone is important for well optimization and management. In an IWS well, downhole gauges are usually installed at the upstream and downstream sides of a downhole control valve ...
Kai Sun, Craig Coull, Jesse Constantine
openaire   +1 more source

Evaluation of the variable valve timing strategy in a direct-injection hydrogen engine with the Miller cycle under lean conditions

Fuel, 2023
Changwei Ji, Chen Hong, Shuofeng Wang, Gu Xin, Hao Meng, Jinxin Yang, Yanfei Qiang   +6 more
openaire   +1 more source