Optimisation of Injection Strategy, Combustion Characteristics and Emissions for IC Engines Using Advanced Simulation Technologies CMCL Innovations

Format:

Conference/Event

Author/Creator:

Etheridge, Etheridge, author.

Contributor:

Bhave, Amit

Coble, Aaron

Kraft, Markus

Mosbach, Sebastian

Smallbone, Andrew

Conference Name:

SIAT 2011 (2011-01-19 : Pune, India)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Pune, MH The Automotive Research Association of India 2011

Summary:

Regulations concerning emissions from diesel- andgasoline-fuelled engines are becoming ever more stringent in allparts of the world. Historically these targets have been achievedthrough on-going technological development using an iterativeprocess of computational modeling, design, build and test.Computational modeling is certainly the cheapest aspect within thisprocess and if employed to meet more of the challenges associatedwith development, has the potential to significantly reducedevelopmental cost and time scales. Furthermore, computationalmodels are an effective means to retain and apply often highlyfocused technical knowledge of complex processes within developmentteams thus delivering greater insight into processes.As such there is a great deal of interest in advanced simulationtechnologies; one such technology is srm suite which has proveneffective in simulating in-cylinder combustion processes to enableengineers to identify optimal injection, valve train and sparktiming operating strategy to achieve a particular load-speed pointwith reduced target emissions. The model accounts for the impact offuel injection strategies, detailed chemical kinetics, turbulentmixing, and heat losses on the inhomogeneities associated with thein-cylinder composition and temperature, within practical computingtime scales.In order to account for the valve train dynamics and enginebreathing within the context of engine cycle simulation, the srmsuite has been coupled with standard 1D engine cycle simulators andapplied to investigate three industry relevant problems (1)investigating cycle-to-cycle variations on emissions in an SIengine, (2) investigating emissions at different injection timings,speeds and loads in a diesel engine operated with pilot injectionand high levels of Exhaust Gas Recirculation (EGR), and (3)simulating a dual injection Homogeneous Charge Compression Ignition(HCCI) engine operated with an injection (fuel reformation) duringNegative Valve Overlap (NVO). In each context, computationalresults are compared with experimental observations and conclusionspresented

Notes:

Vendor supplied data

Publisher Number:

2011-26-0080

Access Restriction:

Restricted for use by site license