Internal Combustion Engine Handbook Basics, Components, Systems, and Perspectives

Basshuysen, Richard van; Schäfer, Fred

doi:10.4271/r-345

Cited by 133 publications

(103 citation statements)

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“…1 gives an overview of specific requirements and characteristics for each area of the valve. [1]. FIGURE 1: Characteristics and requirements of valve regions [4].…”

Section: Valves and Valve Seatsmentioning

confidence: 99%

“…Together with the valve this component must ensure complete sealing of the combustion chamber for the required compression and combustion pressures [1].…”

Section: Valves and Valve Seatsmentioning

confidence: 99%

“…Excessive wear of the intake valve and valve seat cause changes in engine combustion parameters, leading to decreased performance and changes in pollutant emission values [1]. In Brazil, as in other parts of the world, there are studies and applications of valve seat made by powder metallurgy, with the intention of bringing both the commercial aspect related to cost reduction [2] and the technical aspect related to better tribological compatibility [3].…”

Section: Introductionmentioning

confidence: 99%

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Tribological Evaluation of Intake Valve and Valve Seat of a Diesel Cycle Engine in Real Operating Conditions

Penhalbel¹,

Pillis²

2017

Blucher Engineering Proceedings

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Automotive industry demands products that work under extreme conditions. The development of components for internal combustion engines is an action to improve this product, so that it reaches the required life with acceptable levels of wear and respecting the legal operating limits, such as values of emission pollutants. In view of these requirements, it is necessary to study components considered critical, which are known to influence the performance of the engine. So, within this universe the tribology of the intake valve and valve seat insert is an important set, that must receive attention to its wear and consequently its influence on the engine degradation, in the emission of pollutants and performance related to the operational maintenance requirements and life of the product. The aim of this work is to evaluate the behavior of the tribological intake pair, valve and valve seat insert, submitted to dynamometer and vehicular tests (real operating conditions), regarding the level and type of wear occurred in the pair. Correlating the results obtained with legal and operational performance requirements of a Diesel cycle engine, as well as the characterization of the wear type occurred in the tribological pair, with the related literature.

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“…1 gives an overview of specific requirements and characteristics for each area of the valve. [1]. FIGURE 1: Characteristics and requirements of valve regions [4].…”

Section: Valves and Valve Seatsmentioning

confidence: 99%

“…Together with the valve this component must ensure complete sealing of the combustion chamber for the required compression and combustion pressures [1].…”

Section: Valves and Valve Seatsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tribological Evaluation of Intake Valve and Valve Seat of a Diesel Cycle Engine in Real Operating Conditions

Penhalbel¹,

Pillis²

2017

Blucher Engineering Proceedings

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“…In engine tests, the fuel consumption is measured as a flow rate-mass flow per unit time. It measures how efficiently an engine uses the fuel supplied to produce work [28]. The equation is expressed as below:…”

Section: Icmer 2015mentioning

confidence: 99%

Numerical modeling on homogeneous charge compression ignition combustion engine fueled by diesel-ethanol blends

et al. 2016

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Abstract. This paper investigates the performance and emission characteristics of HCCI engines fueled with oxygenated fuels (ethanol blend). A modeling study was conducted to investigate the impact of ethanol addition on the performance, combustion and emission characteristics of a Homogeneous Charge Compression Ignition (HCCI) engine fueled by diesel. One dimensional simulation was conducted using the renowned commercial software for diesel and its blend fuels with 5% (E5) and 10% ethanol (E10) (in vol.) under full load condition at variable engine speed ranging from 1000 to 2750 rpm with 250 rpm increment. The model was then validated with other researcher's experimental result. Model consists of intake and exhaust systems, cylinder, head, valves and port geometries. Performance tests were conducted for volumetric efficiency, brake engine torque, brake power, brake mean effective pressure, brake specific fuel consumption, and brake thermal efficiency, while exhaust emissions were analyzed for carbon monoxide (CO) and unburned hydrocarbons (HC. The results showed that blending diesel with ethanol increases the volumetric efficiency, brake specific fuel consumption and brake thermal efficiency, while it decreases brake engine torque, brake power and brake mean effective pressure. In term of emission characteristics, the CO emissions concentrations in the engine exhaust decrease significantly with ethanol as additive. But for HC emission, its concentration increase when apply in high engine speed. In conclusion, using Ethanol as fuel additive blend with Diesel operating in HCCI shows a good result in term of performance and emission in low speed but not recommended to use in high speed engine. Ethanol-diesel blends need to researched more to make it commercially useable.

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“…Passive methods include three-way catalytic converters, oxidation catalytic converters, diesel particulate filters, NOx (nitrogen oxides) adsorbers or selective reduction catalyst [2]. Several of these technologies need the pollutant production to be known in order to control the addition of different additives needed for the system operation or regeneration.…”

Section: Introductionmentioning

confidence: 99%

Identifying static and dynamic prediction models for NOx emissions with evolving fuzzy systems

Lughofer

Macián

Guardiola

et al. 2011

Applied Soft Computing

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ElsevierLughofer, E.; Macian Martinez, V.; Guardiola García, C.; Klement, EP. (2011) AbstractAntipollution legislation in automotive internal combustion engines requires active control of pollutant formation and emissions. In addition to new technologies, like selective catalyst systems or diesel particulate filters, predictive emission models are needed. These models are of great use in the system calibration phase, and also can be integrated for the engine control and on-board diagnosis tasks. In this paper, fuzzy modelling of the NOx emissions of a diesel engine is investigated, which overcomes some drawbacks of pure engine mapping or analytical physical-oriented models. For building up the fuzzy NOx prediction models, the FLEXFIS approach (short for FLEXible Fuzzy Inference Systems) is applied, which automatically extracts an appropriate number of rules and fuzzy sets by an evolving version of vector quantization (eVQ) and estimates the consequent parameters of Takagi-Sugeno fuzzy systems with the local learning approach in order to optimize the least squares functional. The predictive power of the fuzzy NOx prediction models is compared with that one achieved by physical-oriented models based on high-dimensional engine data recorded during steady-state and dynamic engine states.

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Internal Combustion Engine Handbook Basics, Components, Systems, and Perspectives

Cited by 133 publications

References 0 publications

Tribological Evaluation of Intake Valve and Valve Seat of a Diesel Cycle Engine in Real Operating Conditions

Tribological Evaluation of Intake Valve and Valve Seat of a Diesel Cycle Engine in Real Operating Conditions

Numerical modeling on homogeneous charge compression ignition combustion engine fueled by diesel-ethanol blends

Identifying static and dynamic prediction models for NOx emissions with evolving fuzzy systems

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