High Power Density High Speed Diesel

Malcev, Victor; Bozhenov, Alexey; Schwab, R.; Müther, Martin

doi:10.1007/s40353-016-0013-7

Cited by 5 publications

(2 citation statements)

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“…These factors have an impact on reducing the real benefits in the form of an increase in thermal efficiency. Nevertheless, the fact is that the increased expansion ratio is used in modern engines irrespective of whether they rely on spark ignition or compression ignition [30]. There are several main ways to differentiate the expansion ratio over the compression ratio.…”

Section: Increased Expansion Ratiomentioning

confidence: 99%

A three-way catalyst system for a five-stroke engine

Noga¹

2019

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This paper presents the results of research on the development of an exhaust gas aftertreatment system for a turbocharged five-stroke engine. This engine was designed and constructed at Cracow University of Technology. A characteristic feature of the five-stroke engine is the use of an additional expansion process to increase overall efficiency. A challenge for a catalytic converter is the fact that it has a low exhaust gas temperature. Two three-way catalytic converters were tested-one with a ceramic support and the second with a metal support. The results of the tests showed that the reactor with a ceramic support obtains an acceptable conversion efficiency starting with an exhaust gas temperature of 280°C. For the metal-support reactor, a few percent increase in torque and a decrease in the brake-specific fuel consumption of the engine was obtained; however, the converter itself did not show signs of operation even with an exhaust gas temperature of over 380°C. The performed analyses highlighted directions of further development works in this area.

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Section: Increased Expansion Ratiomentioning

confidence: 99%

A three-way catalyst system for a five-stroke engine

Noga¹

2019

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“…Engines performing an Atkinson/Miller cycle, but based on the classic four-stroke engine, have been used in motor vehicles since the mid-1990s [8]. Due to the specific characteristics of this type of solution, they often occur in vehicles with hybrid drive systems, diesel locomotives, and in industrial applications [9], where the engine operates with an average high load. The Atkinson cycle is also used in modern engines for conventional propulsion systems in order to reduce pumping losses in the low load region [10].…”

Section: Introductionmentioning

confidence: 99%

Selected Issues of the Indicating Measurements in a Spark Ignition Engine with an Additional Expansion Process

Noga

2017

Applied Sciences

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Abstract:The paper presents the results of research on the turbocharged spark ignition engine with additional exhaust expansion in a separate cylinder, which is commonly known as the five-stroke engine. The research engine has been constructed based on the four cylinder engine in which two outer cylinders work as the fired cylinders, while two internally connected inner cylinders constitute the volume of the additional expansion process. The engine represents a powertrain realizing an ultra-expansion cycle. The purpose of the study was to find an effective additional expansion process in the five-stroke engine. Cylinder-pressure indicating measurements were carried out for one of the fired cylinders and the additional expansion cylinder. The study was performed for over 20 different points on the engine operation map. This allowed us to determine a dependence between the pressure indicated in the fired cylinders and in the additional expansion cylinders. A function of the mean pressure indicated in the additional expansion cylinder versus a brake mean effective pressure was also presented. This showed a load threshold from which the work of the cylinders of additional expansion produced benefits for the output of the experimental engine. The issues of mechanical efficiency and effective efficiency of this engine were also discussed.

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On the Adhesive Strength Quantification and Tribological Performance of the Multilayered Fe–Ni Coating Fabricated by Electroplating

Huang

Dong

et al. 2019

Strength Mater

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High Power Density High Speed Diesel

Cited by 5 publications

References 0 publications

A three-way catalyst system for a five-stroke engine

A three-way catalyst system for a five-stroke engine

Selected Issues of the Indicating Measurements in a Spark Ignition Engine with an Additional Expansion Process

On the Adhesive Strength Quantification and Tribological Performance of the Multilayered Fe–Ni Coating Fabricated by Electroplating

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