Results 231 to 240 of about 1,241 (252)
Some of the next articles are maybe not open access.
CFD Simulation for Reduction of Oil Churning Loss and Windage Loss on Aeroengine Transmission Gears
Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation; Education; Electric Power; Awards and Honors, 2009In recent years, the demand for power generation capacity has increased considerably due to the electric drive of air conditioners and so on in the engines of civil aircraft. Therefore, it is estimated that power losses may increase in the gearbox because of generators and pumps that in turn augment fuel consumption.
Hidenori Arisawa +3 more
openaire +1 more source
Study on the Churning Loss and Numerical Calculation Model of Planetary Gear Train
Lecture Notes in Mechanical EngineeringHuixiao Chen +5 more
exaly +2 more sources
Churning power losses of a gearbox with spiral bevel geared transmission
Tribology International, 2019Abstract To predict the churning power losses in a gearbox with spiral bevel geared transmission, based on the Computational Fluid Dynamics (CFD) method, a numerical simulation model for the splash lubrication of the intermediate gearbox of a helicopter including gear box housing, a spiral bevel gear pair and an oil guide device is established and ...
Xiaozhou Hu +4 more
openaire +1 more source
Churning losses of spiral bevel gears at high rotational speed
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2019In the present study, no-load losses of different splash lubricated spiral bevel gears were measured. The authors used a specific test rig, and a set of gears, to investigate churning losses at higher tangential speeds: up to 60 m/s. An uncommon behavior of the drag torque was highlighted: the torque increased with the rotational speed until a local ...
Quiban, R +4 more
openaire +1 more source
Optimization of Oil Quantity in Manual Transmission and Reducing Churning Loss
SAE Technical Paper Series<div class="section abstract"><div class="htmlview paragraph">The gearbox is a crucial aggregate in a diesel truck. Gearboxes must work efficiently to get the job done properly and lubrication is vital to this efficiency. Lubricating oil is like the circulation system of a gearbox.
Sundar Lakshamanan +3 more
openaire +1 more source
Churning Loss Estimation for Manual Transmission Gear Box Using CFD
SAE International Journal of Passenger Cars - Mechanical Systems, 2015<div class="section abstract"><div class="htmlview paragraph">Fuel economy is one of the factors that drives the automobile sector today, and the demand for fuel efficient vehicles continues to increase by the day. Power loss in the vehicle driveline directly affects the fuel economy and must be reduced to achieve maximum fuel economy ...
Chandrasekhar Kodela +2 more
openaire +1 more source
Three-stage churn management framework based on DCN with asymmetric loss
Expert Systems with Applications, 2022Xiaohuan Wen +3 more
openaire +1 more source
Customer churn rate / attrition rate: prediction of customer loss
2019Χαμένη πελατεία ορίζεται συνήθως η πιθανότητα ένας πελάτης να διακόψει εθελοντικά ένα υπάρχον/ουσα συμβόλαιο-σύμβαση μέσα στους επόμενους Χ μήνες, όπου ο αριθμός Χ καθορίζεται σύμφωνα με τον τύπο της επιχείρησης και το είδος του προβλήματος πιο συγκεκριμένα. Αναφέρεται επίσης και ως απώλεια πελατών. (Forecast Analytics,2015).
openaire +1 more source
Churning power loss of the intermediate gearbox in a helicopter under splash lubrication
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2022Rupeng Zhu, Fengxia Lu, Heyun Bao
exaly