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First Launch of 2.0l I4 Engine with UpValve VVA System

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Book cover Experten-Forum Powertrain: Ladungswechsel und Emissionierung 2019

Part of the book series: Proceedings ((PROCEE))

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Abstract

Since 2010 Pierburg has been involved in development, application and production of mechanical, fully variable valve actuation (VVA) systems. UpValve, UniValve und FlexValve are recognized upgrades for SI- as well as for Diesel engines. This paper reports on the first launch of a gasoline engine with the UpValve VVA System on the intake side.

After a brief introduction to the VVA system architecture and operation principle, the specific application to the target engine is presented, emphasizing the cylinder head design and constrains, the intrinsic cylinder deactivation (CDA) functionality and the control system structure. Subsequently, engine dyno results in terms of full load performance and part load efficiency are shared.

Finally, an insight into the mass production strategy is given. The production process of the UpValve rocker, including machining, assembly and testing, is explained in more detail.

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Abbreviations

AFR:

Air Fuel Ratio

BMEP:

Brake Mean Effective Pressure

BSFC:

Brake Specific Fuel Consumption

CAC:

Charge Air Cooler

CDA:

Cylinder Deactivation

COV:

Covariance (of NMEP)

CR:

Compression Ratio

DV:

Design Verification

ECU:

Engine Control Unit

EGR:

Exhaust Gas Recirculation

(e)IVC:

(early) Intake Valve Closing

EOL:

End of Line (testing)

EVC:

Exhaust Valve Closing

GPF:

Gasoline Particle Filter

HLA:

Hydraulic Lash Adjuster

GDI:

Gasoline Direct Injection

MAP:

Manifold Absolute Pressure

MIM:

Metal Injection Moulding

n/a:

natural aspirated (engine)

PMEP:

Pumping Mean Eff. Pressure

PV:

Production Verification

RFF:

Roller Finger Follower

SI:

Spark Ignited (engine)

T/C:

Turbo Charger

type_2:

RFF type valve train

VCR:

Variable Compression Ratio

VCU:

Valve Control Unit

VNT:

Variable Nozzle Turbine

VVA:

Variable Valve Actuation

VVT:

Variable Valve Timing

References

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Correspondence to Stefan Moormann .

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© 2020 Springer Fachmedien Wiesbaden GmbH, ein Teil von Springer Nature

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Moormann, S. et al. (2020). First Launch of 2.0l I4 Engine with UpValve VVA System. In: Liebl, J. (eds) Experten-Forum Powertrain: Ladungswechsel und Emissionierung 2019. Proceedings. Springer Vieweg, Wiesbaden. https://doi.org/10.1007/978-3-658-28709-2_8

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