Boosted Gasoline Direct Injection Engines: Comparison of Throttle and VGT Controllers for Homogeneous Charge Operation

Lezhnev, L. Yu.; Kolmanovsky, Ilya; Buckland, Julie

doi:10.4271/2002-01-0709

Cited by 15 publications

(12 citation statements)

References 8 publications

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“…Turbo lag describes the delay in torque response due to the time required for the turbocharger to change speed and thus affect boost pressure. Control objectives for fast response to minimize this effect are tempered by limits on boost pressure overshoot, which can lead to unacceptable torque disturbances [30,31].…”

Section: Control Of Turbocharged Gasoline Enginesmentioning

confidence: 99%

“…More recently, control with advanced actuators has received significant attention. Apart from [30,31], however, the focus has been on the turbocharged diesel engine (for example see [34,35,36]). Most of these results cannot be applied directly to the gasoline engine due to fundamental differences in actuators and system performance objectives.…”

Section: Control Of Turbocharged Gasoline Enginesmentioning

confidence: 99%

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Automotive Powertrain Control - A Survey

Cook

Sun²,

Buckland

et al. 2008

Asian Journal of Control

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This paper surveys recent and historical publications on automotive powertrain control. Control-oriented models of gasoline and diesel engines and their aftertreatment systems are reviewed, and challenging control problems for conventional engines, hybrid vehicles and fuel cell powertrains are discussed. Fundamentals are revisited and advancements are highlighted. A comprehensive list of references is provided.

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Section: Control Of Turbocharged Gasoline Enginesmentioning

confidence: 99%

Section: Control Of Turbocharged Gasoline Enginesmentioning

confidence: 99%

Automotive Powertrain Control - A Survey

Cook

Sun²,

Buckland

et al. 2008

Asian Journal of Control

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“…By allowing for quicker build-up of boost pressure, the transient behavior can be improved even at very low engine speed. Variable geometry turbines have been largely adopted to optimize the exhaust energy recovery over a large operating range [6], [7]. However, the compressor technology is today still based on fixed geometry machines, sized for peak engine power conditions, and therefore operating inefficiently at part loads.…”

Section: Introductionmentioning

confidence: 99%

Dynamic steady-state allocation for over-actuated turbocharged diesel engines

Zhou

Fiorentini

Canova

et al. 2013

52nd IEEE Conference on Decision and Control

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This paper presents a control design for the air path system dynamics of a turbocharged Diesel engine equipped with exhaust gas recirculation (EGR), variable geometry turbine (VGT) and a variable geometry compressor (VGC) system. Previous work has shown that the VGC actuator provides the opportunity to improve the stability of the compressor, optimize its efficiency and increase the shaft speed to minimize the turbo lag during transients. Building upon this study, the extra degree of freedom introduced by the VGC is exploited in this paper to dynamically optimize some performance variables during transients while regulating the controlled variables to the desired set points. A linearized model, derived from a validated model of the engine air-path dynamics, is used for control design. The proposed control methodology, suitable for over-actuated systems, relies on the characterization of the redundancy in geometric terms. This redundancy is exploited to shape the steady-state response by optimizing on-line a given cost function. A case study that shows the effectiveness of the proposed control strategy is presented. 52nd IEEE Conference on Decision and ControlDecember 10-13, 2013. Florence, Italy 978-1-4673-5717-3/13/$31.00 ©2013 IEEE 6843

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“…The dynamics of the system, primarily due to the turbocharger inertia, cause a lag in the intake pressure response and therefore the brake torque. Authors in [9] refer to a "load acceptance test", which characterizes the ability of the engine to increase torque at a constant engine speed. The speed of response is judged via comparison of the closed loop response of the intake manifold pressure to the fastest intake pressure rise that can ideally be achieved with a wide open throttle and closed wastegate.…”

Section: Fig 2 Control Problem Formulationmentioning

confidence: 99%

Electronic throttle andwastegate control for turbocharged gasoline engines

Karnik

Buckland

Freudenberg³

Proceedings of the 2005, American Control Conference, 2005.

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Turbocharging of gasoline engines has gained renewed popularity as a means to improve fuel economy and CO2 emissions. Modern engines have advanced technology actuators such as electronic throttle and variable valve timing, in addition to wastegate. Proper control of system actuators is critical to achieving the full benefit of this technology. This paper presents system analysis and control development for a turbocharged gasoline engine equipped with wastegate and electronic throttle. A nonlinear mean value model for the system is presented. The nonlinear model is linearized at multiple operating points and its behavior analyzed using the systems approach. A gain scheduled, decentralized controller is designed to track the intake manifold and boost pressures to meet transient, as well as steady state requirements. A multi-variable control approach is also considered to alleviate tradeoffs inherent in decentralized design.

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Boosted Gasoline Direct Injection Engines: Comparison of Throttle and VGT Controllers for Homogeneous Charge Operation

Cited by 15 publications

References 8 publications

Automotive Powertrain Control - A Survey

Automotive Powertrain Control - A Survey

Dynamic steady-state allocation for over-actuated turbocharged diesel engines

Electronic throttle andwastegate control for turbocharged gasoline engines

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