Research and Design an Experimental Model for the Determination of Deposits Formation Mechanism in the Combustion Chamber

Self Cite

Along with the development of internal combustion engines, camshafts have also been developed to optimize engine performance. In all types of internal combustion engines, the crankshaft is connected to the camshaft via a toothed belt, chain or pinion. When the crankshaft turns, the camshaft spins and opens and closes the intake and exhaust valve respectively. However, in this non-camshaft engine technology, each intake and exhaust valve will be integrated with an electronically controlled hydraulic pump unit. This system provides a unique ability to independently control intake and exhaust valves. For any engine load, load and discharge times can be programmed independently. The decision system is based on driving conditions, used to maximize performance or minimize fuel consumption and emissions. This allows a greater degree of control over the engine which in turn provides significant performance benefits. This article presents reviews of camshaftless technology developed by VALEO. It is a system that uses solenoid valves to open and close the valve. The solenoid valve will be mounted right on top of the valve inside the engine. The author can see that the technology using this electronic control valve will help reduce the fuel consumption of the engine.

Section: Disc Valve With Electro-mechanical Drivementioning

confidence: 99%

Section: Disc Valve With Electro-hydraulic Impactmentioning

confidence: 99%

Camshaftless Technology on Internal Engines

Pham¹

2020

Self Cite

“…In addition, recirculation gas also increases the specific heat of the flue gas so the fire temperature decreases [20]. The goal of lowering these parameters is to stop NOx production, reducing the concentration of the substance in the exhaust gas [21]. In fact, the higher the temperature, the more NOx is produced (nitrogen is in the air).…”

Section: Emissions Gas Recirculation (Egr)mentioning

confidence: 99%

Potential Application of Biofuel Fuel On the Marine Diesel Engines in Vietnam

Vu¹,

Le²,

Le³

2019

Energy in the transportation sector has become a hot issue all over the world because it can affect the energy security of nations. Finding a new type of energy to replace fossil energy is a top concern of many countries, including biofuels. Over the past two decades, there have been many studies on the use of biodiesel and its mix for diesel engines, the results are very positive. In Vietnam, there have also been studies on the use of biodiesel and its mixes on road transport vehicles. However, in the field of waterway transport, there has not been any specific research. Through a comprehensive synthesis of the application situation and research directions in the world, as well as the ability to produce biodiesel in Vietnam, the article wishes to create a premise to develop more research to find develop new technology solutions to apply clean fuels, especially biofuels on the domestic fleet, in line with the development trend of the world on the use of biodiesel fuel.

“…green energy source because their use helps reduce emissions of serious pollutants such as CO, SO2, NOx, and CxHy compounds [3], [4]. However, the emissions from the combustion of biodiesel fuel in diesel engines of organic compounds are small but very toxic and affect the ambient air environment [5].…”

Section: Introductionmentioning

confidence: 99%

“…CBCs are considered toxic because they are capable of causing allergies or cancer in humans [14]. Among them, formaldehyde, acetaldehyde, acrolein, propional dehyde and butanol have been listed by the US Environmental Protection Agency (USEPA) as toxic gases for human health [4]. Moreover, CBCs are also precursors that form ozone in the atmosphere [5], [15].…”

Section: Introductionmentioning

confidence: 99%

A Study on Particulate Emission Characteristics of Diesel Engine using a Mixture of Commercial Diesel and Biodiesel Based Palm-Oil

Pham¹

2020

Self Cite

Currently, oil and gas accounts for about 60 - 80% of the world's energy. According to scientists, with the current consumption rate, this source of energy will be exhausted in the next 40-50 years; Therefore, finding alternative energy sources has become the goal of many countries. In particular, the sources of energy friendly to the environment and renewable such as wind energy, solar energy, bioenergy ... are given top priority. Biodiesel is a liquid biofuel with similar properties and can be used as a substitute for conventional diesel oil. Testing and proceeding to apply B5 and B10 fuels to vehicles will reduce the amount of toxic emissions and replace exhausted petroleum and gas sources. This paper focuses on the KDE3500T engine test bed at 50% loading to analyze and assess the emission of particulate matter and oxidized organic compounds. With different mixing ratios between commercial gasoline of 0.05 S and palm oil biodiesel from 10% to 75%. Experimental results show that the particle emission concentration decreased by about 30% from B0 to B20 and increased by about 15% from B30 to B100. While carbonyl compounds such as formaldehyde, acetaldehyde and acetone increased about 2.5 times from B0 to B30 and dropped abruptly at B50, however carbonyl concentration increased by about 28% when using B75 to B100.