Application of input estimation techniques to charge estimation and control in automotive engines

Stotsky, Alexander; Kolmanovsky, Ilya

doi:10.1016/s0967-0661(02)00101-6

Cited by 136 publications

(96 citation statements)

References 11 publications

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“…Volumetric efficiency under transient conditions has been found to be similar to the corresponding steady-state operation by Smith [46]. In fact, mass air flow (MAF) determined using the speed-density method was found to be more accurate than direct measurement by a mass air flow meter during transients in the work of Stotsky and Kolmanovski [37]. Therefore, it is proposed that the intake air flow is determined from measured engine rpm, measured intake manifold charge pressure and temperature, known engine displacement, and known or estimated engine volumetric efficiency [35].…”

mentioning

confidence: 63%

Estimation of Engine Intake Air Mass Flow using a generic Speed-Density method

Vojtíšek¹,

Kotek²

2014

Journal of Middle European Construction and Design of Cars

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SHRNUTÍ Měření výfukových emisí spalovacích motorů během reálného provozu přenosnými zařízeními umístěnými na palubě vozidla (PEMS) je důležitou součástí hodnocení dopadu nových paliv a technologií na životní prostředí a lidské zdraví. Znalost aktuálního toku výfukových plynů je jedním z nezbytných předpokladů pro takové provozní měření. Jedním z nejjednodušších způsobů je výpočet z toku nasáveného vzduchu, který je vypočten z měřených otáček motoru a tlaku a teploty náplně v sacím potrubí. V této práci byl obecný algoritmus využívající odhad dopravní účinnosti libovolného běžného čtyřdobého motoru aplikován na tři produkční evropské motory běžně využívané v ČR: těžký a automobilový přeplňovaný vznětový motor, a atmosférický zážehový motor. Vypočtené průtoky nasávaného vzduchu byly porovnány s různými referenčními metodami. Výsledky ukazují, že nejistota stanovení toku nasáveného vzduchu obecným algoritmem je v řádu 10% pro většinu provozních režimů motoru, kromě případů recirkulace velké části výfukových plynů, kdy nejistota vzrůstá na desítky procent. Desetiprocentní nejistota pro motory bez vysoké míry recirkulace výfukových plynů je přijatelná pro mnohá, zvláště průzkumná a orientační, měření emisí za provozu, a může být snížena kalibrací algoritmu pro daný motor.

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mentioning

confidence: 63%

Estimation of Engine Intake Air Mass Flow using a generic Speed-Density method

Vojtíšek¹,

Kotek²

2014

Journal of Middle European Construction and Design of Cars

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“…A PID control was designed to emulate the driver's input for a demand square wave signal with a period of 30 s, oscillating between 9 and 22 m/s. The proposed unknown input observer (UIO) is compared with a Sliding Mode Observer (SMO) and High Gain Observer (HGO) (Stotsky & Kolmanovsky, 2002). It is of interest to compare these three estimators during fast varying conditions, when the driver accelerates aggressively, or brakes suddenly.…”

Section: 3 Validation Of Unknown Input Observermentioning

confidence: 99%

“…Stotsky (Stotsky & Kolmanovsky, 2002) compared three unknown input observers for air charge estimation, and also showcased the potential of chaining multiple estimators together to enable simultaneous estimation of the throttle air mass flow, manifold pressure, and the port air mass flow. Hong et al (Hong, et al, 2011) presented model-based torque observer configurations depending on available sensors.…”

Section: Introduction Engine Torque Is An Important Variable In Many mentioning

confidence: 99%

Engine Torque Estimation with Integrated Unknown Input Observer and Adaptive Parameter Estimator

et al. 2017

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General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Abstract: This paper presents an integrated estimation scheme for the effective engine torque in automotive systems. This leads to a cascaded estimation structure, composed of an adaptive parameter estimator for the augmented wheel dynamics and the longitudinal motion, and an unknown input observer for the engine crankshaft dynamics. The adaptive parameter estimator has the ability to track time-varying parameters and can therefore provide an estimate of the driving torque for the wheels. Then this estimated torque is transmitted to the engine as the load torque through the drivetrain, and is used to design the unknown input observer. The standard models of driveline and tyre friction are modified for ease of parameter estimation. Only the engine crankshaft velocity, the wheel rotational velocity, and the vehicle longitudinal speed are needed. The convergence of these estimators is analyzed. Simulations based on a dynamic simulator built with commercial vehicular simulation software, IPG CarMaker, and Matlab/Simulink show promising results.

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“…Then, (5) becomes The bias dZ is completely unknown when it represents the modeling error in the volumetric efficiency. Following ideas of Andersson and Eriksson (2001) and Stotsky and Kolmanovsky (2002), one assume a constant bias, i.e. _ dZ ¼ 0.…”

Section: Balance In the Intake Manifoldmentioning

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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Application of input estimation techniques to charge estimation and control in automotive engines

Cited by 136 publications

References 11 publications

Estimation of Engine Intake Air Mass Flow using a generic Speed-Density method

Estimation of Engine Intake Air Mass Flow using a generic Speed-Density method

Engine Torque Estimation with Integrated Unknown Input Observer and Adaptive Parameter Estimator

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

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