Development of Supercarburized Tappet Shim to Improve Fuel Economy

2000 ◽  
Author(s):  
Seung Gyun Ahn ◽  
Hyung Oh Ban ◽  
Bong Lae Jo ◽  
Seung Cheal Kim ◽  
Seung Cheal Jung
Keyword(s):  
Fuel Economy ◽  
Improve Fuel Economy

OPTIMIZATION OF ICE START-STOP BASED ON MPC FOR AN HEV TO IMPROVE FUEL ECONOMY

2017 ◽  
Vol 41 (3) ◽  
pp. 355-374 ◽  
Author(s):  
Aiyun Gao ◽  
Xiaozhong Deng ◽  
Zhumu Fu ◽  
Mingzhu Zhang
Keyword(s):  
Fuel Economy ◽  
Improve Fuel Economy

scholarly journals OPTIMIZATION OF A PASSENGER HYDRAULIC HYBRID VEHICLE TO IMPROVE FUEL ECONOMY

2008 ◽  
Vol 2008 (7-1) ◽  
pp. 143-148 ◽  
Author(s):  
Kim A. STELSON ◽  
Jonathan J. MEYER ◽  
Andrew G. ALLEYNE ◽  
Brandon HENCEY
Keyword(s):  
Fuel Economy ◽  
Hybrid Vehicle ◽  
Improve Fuel Economy ◽  
Hydraulic Hybrid ◽  
Hydraulic Hybrid Vehicle

Active Vibration Control of Active Fuel Management Engines Using Active Engine Mounts

2007 ◽  
Author(s):  
Kwang-Keun Shin
Keyword(s):  
Fuel Economy ◽  
Control Algorithm ◽  
Closed Loop ◽  
Open Loop ◽  
Closed Loop Control ◽  
Fuel Management ◽  
Loop Control ◽  
Improve Fuel Economy ◽  
Engine Mount ◽  
Active Engine

Given the realities of today’s world, the goal of achieving vehicular fuel economy is of paramount importance. One cost effective solution to improve fuel economy without major modification of engines is using Active Fuel Management (AFM), which refers to on-demand cylinder activation and deactivation. One general characteristic of AFM engines is higher level of ignition force resulting in higher torque variation. Consequently the noise and vibration (N&V) performance of a vehicle with an AFM engine can reach an unacceptable level with aggressive cylinder deactivation. One solution to improve fuel economy without degrading N&V performance is the use of Active Engine Mount (AEM). This paper studies the control methods for active engine mount. Both open-loop and closed-loop control are developed based upon single-tone adaptive feed-forward control framework. The details of the algorithm are discussed and the stability and the robustness are examined. Integrated open-loop and closed-loop control is proposed to ensure fast response, enhance performance and robustness. A series of simulations are performed to demonstrate the control algorithm. It is shown that the integrated open-loop and closed-loop control algorithm yields the most promising results.

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