Downsizing a Gasoline Engine Using Turbocharging with Direct Injection

Lecointe, Bertrand; Monnier, Gaëtan

doi:10.4271/2003-01-0542

Cited by 154 publications

(70 citation statements)

References 3 publications

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“…New engine concepts with improved efficiencyand emissions will also be associated with modifications of the engine hardware.Some general developments will be beneficial regardless of the chosen fuel, such as friction reduction and partial electrification of the powertrain, as in hybrid vehicles.Downsizing the combustion engine and reducing the engine speed are measures that shift the engine operating points to higher load regimes,t hereby permitting the fuel consumption to be reduced by up to 20 %inthe New European Driving Cycle. [102] These concepts have their specific challenges,h owever. Since downsized engines will be operated for longer times at higher specific engine loads under real-world driving conditions,t he risk of unwanted combustion events such as knocking or pre-ignition rises.…”

Section: Future Combustion Enginesmentioning

confidence: 99%

Advanced Biofuels and Beyond: Chemistry Solutions for Propulsion and Production

et al. 2017

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Sustainably produced biofuels, especially when they are derived from lignocellulosic biomass, are being discussed intensively for future ground transportation. Traditionally, research activities focus on the synthesis process, while leaving their combustion properties to be evaluated by a different community. This Review adopts an integrative view of engine combustion and fuel synthesis, focusing on chemical aspects as the common denominator. It will be demonstrated that a fundamental understanding of the combustion process can be instrumental to derive design criteria for the molecular structure of fuel candidates, which can then be targets for the analysis of synthetic pathways and the development of catalytic production routes. With such an integrative approach to fuel design, it will be possible to improve systematically the entire system, spanning biomass feedstock, conversion process, fuel, engine, and pollutants with a view to improve the carbon footprint, increase efficiency, and reduce emissions.

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Section: Future Combustion Enginesmentioning

confidence: 99%

Advanced Biofuels and Beyond: Chemistry Solutions for Propulsion and Production

et al. 2017

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“…This approach is of particular interest in the context of downsizing (reduction of the engine size), which has appeared as a major solution to the problem of reducing fuel consumption (see Lecointe & Monnier, 2003). In the present study, the engine under consideration was not equipped with any exhaust gas recirculation (EGR) capability.…”

Section: Motivationmentioning

confidence: 99%

Motion planning for experimental air path control of a variable-valve-timing spark ignition engine

Leroy

Chauvin

Petit

2009

Control Engineering Practice

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a b s t r a c tAir path control of a spark ignition engine without an EGR loop, equipped with variable-valve-timing (VVT) actuators, is addressed in this paper. VVT devices are used to produce internal exhaust gas recirculation, providing beneficial effects in terms of fuel consumption and pollutant emissions reduction. However, VVT actuators affect the fresh air charge in the cylinders. This has an impact on the torque output (leading to driveability problems) and on the fuel/air ratio (FAR) (leading to pollution peaks). To compensate for these undesirable effects, a new approach is proposed. Supportive experimental results show the relevance of this approach.

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“…Modern automobile engines must therefore satisfy the challenging, and often conflicting, goals of minimizing pollutant emissions and fuel consumption while satisfying driving performance over a wide range of operating conditions. To achieve these goals, downsizing appears as a major way for reducing fuel consumption while maintaining the advantage of low emission capability of three-way catalytic systems and combining several well known technologies (Lecointe and Monnier, 2003). Downsizing is the use of a smaller capacity engine operating at higher specific engine loads, i.e.…”

Section: Contextmentioning

confidence: 99%

“…In order to feed the engine, turbocharging seems to be the best solution. Unfortunately, the turbocharger inertia involves long torque transient responses (Lecointe and Monnier, 2003;Frei et al, 2006). This problem can be partially solved by combining turbocharging and Variable Camshaft Timing (VCT) which allows air scavenging from the intake to the exhaust.…”

Section: Contextmentioning

confidence: 99%

Two air path observers for turbocharged SI engines with VCT

Colin¹,

Bloch²,

Chamaillard³

et al. 2009

Control Engineering Practice

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Nowadays, downsizing is a major way to reduce fuel consumption and pollutant emissions of Spark Ignition (SI) engines. In downsized engines, new air path management systems such as turbocharging or Variable Camshaft Timing (VCT) are including, and an efficient control of the air actuators is required for engine torque control. Two non-linear estimators are proposed to estimate non-measured variables of the air path. The first one is an incylinder air mass observer that combines feedforward neural static models and a Linear Parameter Varying (LPV) polytopic observer. The second one is a neural estimator of the burned gas and the air scavenged masses. Test bench results on a turbocharged SI engine with VCT show the real time applicability and good performance of the proposed estimators. Finally, a strategy for developing the engine supervisor is presented.

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Downsizing a Gasoline Engine Using Turbocharging with Direct Injection

Cited by 154 publications

References 3 publications

Advanced Biofuels and Beyond: Chemistry Solutions for Propulsion and Production

Advanced Biofuels and Beyond: Chemistry Solutions for Propulsion and Production

Motion planning for experimental air path control of a variable-valve-timing spark ignition engine

Two air path observers for turbocharged SI engines with VCT

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