Throttleless control of SI engine load by fully flexible inlet valve actuation system

Żmudka, Z.; Postrzednik, S.; Przybyła, Grzegorz

doi:10.19206/ce-116488

Cited by 5 publications

(4 citation statements)

References 14 publications

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“…The theoretical Atkinson-Miller open cycle presented in Fig. 1 provides a model for the LIVC system [19]. The inlet valve closes at the volume V 1,A and this is a load regulation parameter.…”

Section: System With Late Inlet Valve Closing Livcmentioning

confidence: 99%

“…The fully independent valve control system is an algorithm that combines the procedures for independent control of the inlet and exhaust valves. FIVC is achieved by combining the EIVC system [19] with the EEVC system [20]. The theoretical cycle for FIVC is presented in Fig.…”

Section: System Of Fully Independent Valve Control Fivcmentioning

confidence: 99%

“…The course of the above-mentioned parameters, separately for each of the tested systems, has been presented in previous publications: LIVC in [19], EIVC in [19], EEVC in [20], FIVC in [20]. In this publication, to evaluate the effectiveness and benefits of the proposed independent valve control systems, a comparative analysis of the selected, listed above, key parameters has been carried out.…”

Section: Comparative Analysis Of the Effectiveness Of Using The Teste...mentioning

confidence: 99%

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Comparative analysis of theoretical cycles of independent valve control systems of the SI engine

Żmudka,

Postrzednik

2024

Combustion Engines

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The objects of the study were theoretical cycles of the load control systems and charge exchange process in the naturally aspirated SI engine, including: classic, quantitative throttling control (Seiliger-Sabathe open cycle); system with late inlet valve closing LIVC (the Atkinson-Miller open cycle); system with early inlet valve closing EIVC; system with early exhaust valve closing EEVC, enabling internal exhaust gas recirculation; system of fully independent valve control FIVC. The aim of using camless independent valve control algorithms is to eliminate the throttle as an control valve for load and filling control of the SI engine, while retaining quantitative load control. The aim of the research is to select the camless valve control algorithm most beneficial in terms of energy (the highest effective efficiency) and economy (the lowest fuel consumption).

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Section: System With Late Inlet Valve Closing Livcmentioning

confidence: 99%

Section: System Of Fully Independent Valve Control Fivcmentioning

confidence: 99%

Section: Comparative Analysis Of the Effectiveness Of Using The Teste...mentioning

confidence: 99%

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Comparative analysis of theoretical cycles of independent valve control systems of the SI engine

Żmudka,

Postrzednik

2024

Combustion Engines

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“…A fully independent valve control (FIVC) system is achieved by combining the early inlet valve closing (EIVC) system [6,21] with the early exhaust valve closing (EEVC) system [20]. The FIVC system enables the implementation of internal exhaust gas recirculation and full adjustment of the fuel dose.…”

Section: Basic Features Of the Cyclementioning

confidence: 99%

Improving the effective efficiency of a spark ignition engine through the use of a fully independent valve control system

Żmudka¹,

Postrzednik²

2021

Combustion Engines

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The article presents theoretical research of the proposed system of fully independent valve control (FIVC) of the SI engine. The analysis included controlling the movement of the intake valves, which results in adjusting the mass of the fresh charge to the current engine load, as well as the movement of the exhaust valves, where the main aim is to keep the rest of the exhaust gas in the cylinder, i.e. implementation of internal EGR. The open theoretical Seiliger-Sabathe cycle with the classic throttle regulation of load is the reference cycle for assessment of benefits and study of the effectiveness of obtaining work as a result of application of the FIVC system. A comparative analysis of the effectiveness of application of the proposed system was carried out based on the selected quantities: fuel dose, cycle work, relative work of charge exchange and cycle efficiency. The use of the FIVC to regulate the SI engine load makes it possible to eliminate the throttle and thus reduce the charge exchange work, especially in the partial load range. And this then leads to an increase in internal and effective work, which in turn results in an increase in the effective energy efficiency of an engine operation.

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Variable Valve Actuation Systems

Srivastava

Das

Singh

2017

Energy, Environment, and Sustainability

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Throttleless control of SI engine load by fully flexible inlet valve actuation system

Cited by 5 publications

References 14 publications

Comparative analysis of theoretical cycles of independent valve control systems of the SI engine

Comparative analysis of theoretical cycles of independent valve control systems of the SI engine

Improving the effective efficiency of a spark ignition engine through the use of a fully independent valve control system

Variable Valve Actuation Systems

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