Elektrohydraulischer Vollvariabler Ventiltrieb

Haas, Michael; Rauch, Martin

doi:10.1007/bf03225552

Cited by 10 publications

(2 citation statements)

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“…In 2009, Schaeffler and Fiat collaborated to put the UniAir electrohydraulic valve train system, the design and function of which has been described multiple times [2][3][4] into volume production. The scope of delivery from Schaeffler comprises the following: -The electrohydraulic actuator module -The software required for controlling the valve control system, which is integrated into the customer's engine control system -A calibration data set for the relevant application This system has since been adapted for a range of volume-production engines with capacities ranging from 0.9 to 2.4 liters and more than 500,000 units have been delivered to customers in Europe and in North and South America.…”

Section: Variable Valve Lift Curvesmentioning

confidence: 99%

“…The valve overlap that this requires is conventionally achieved through the use of camshaft phasing units. This type of camshaft phasing unit, which is characterized by its high adjustment speed, is available from Schaeffler [4]. When designed correctly, UniAir can partially replace camshaft phasing units of this type.…”

Section: Expansion Of the Scope Of Functions Applications For Gasolinmentioning

confidence: 99%

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Ventiltriebe zur Umsetzung innovativer Verbrennungsstrategien

2014

Solving the Powertrain Puzzle

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Section: Variable Valve Lift Curvesmentioning

confidence: 99%

Section: Expansion Of the Scope Of Functions Applications For Gasolinmentioning

confidence: 99%

Ventiltriebe zur Umsetzung innovativer Verbrennungsstrategien

2014

Solving the Powertrain Puzzle

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Trends—Spark Ignition

Pischinger

Nijs

Adomeit

et al. 2014

Encyclopedia of Automotive Engineering

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Current and future combustion engine development targets a considerable reduction in fuel consumption and emissions to meet strict emission legislation despite steady or increasing customer comfort and performance demands. Additionally, reduced time to market is required despite increasing variations in customer demands and fuel qualities in worldwide markets. To meet these targets, gasoline engines have made progress in efficiency by the introduction of technologies such as direct injection in combination with downsizing and turbo‐ or supercharging, valve train variability, and a variety of additional measures to reduce friction losses such as electrification of accessories. In this article, current and future engine development trends are described and illustrated in detail. Potential future measures to further reduce fuel consumption are pointed out and evaluated. Besides well‐known mega trends such as downsizing and variable valve trains, concepts such as controlled autoignition, variable compression, and new ignition systems are considered. In general, the article shows the potential of new technologies to improve fuel consumption and emission behavior of future combustion engines.

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