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John B. Heywood
Massachusetts Institute of Technology
CombustionEngineeringAutomotive engineeringSpark-ignition engineInternal combustion engine
177Publications
46H-index
7,470Citations
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Publications 211
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#1Emmanuel Kasseris (MIT: Massachusetts Institute of Technology)H-Index: 7
#2John B. Heywood (MIT: Massachusetts Institute of Technology)H-Index: 46
Last. Ravi KolakaluriH-Index: 4
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#1John B. HeywoodH-Index: 46
#2Eran SherH-Index: 26
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#1Summer Jiakun Zhao (MIT: Massachusetts Institute of Technology)H-Index: 1
#2John B. Heywood (MIT: Massachusetts Institute of Technology)H-Index: 46
Abstract China’s rapidly rising number of light-duty vehicles (LDVs) on the road is resulting in serious environmental, energy security, and health problems. This paper examines how electrified vehicles (EVs) can help reduce China’s energy demand and greenhouse gas (GHG) emissions in the future. Here EVs include hybrid electric vehicle (HEV), plug-in hybrid electric vehicle (PHEV), and battery electric vehicle (BEV). First, this study uses an Electricity Supply and Emissions Model to forecast th...
3 CitationsSource
#1Young Suk Jo (MIT: Massachusetts Institute of Technology)H-Index: 6
#2Leslie Bromberg (MIT: Massachusetts Institute of Technology)H-Index: 27
Last. John B. Heywood (MIT: Massachusetts Institute of Technology)H-Index: 46
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4 CitationsSource
#1Young Suk Jo (MIT: Massachusetts Institute of Technology)H-Index: 6
#2Leslie Bromberg (MIT: Massachusetts Institute of Technology)H-Index: 27
Last. John B. Heywood (MIT: Massachusetts Institute of Technology)H-Index: 46
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13 CitationsSource
#1Andrew J. Stratton (University of Cambridge)
#2John B. Heywood (MIT: Massachusetts Institute of Technology)H-Index: 46
This study investigates the impact that regenerative braking has on hybrid electric vehicle (HEV) fuel economy using the Autonomie automotive simulation package. Simulations are used to compare the fuel economy of hybrid architectures with regenerative braking effectively enabled and disabled. This study investigates the impact that regenerative braking has on urban, highway and more aggressive driving, concluding that regenerative braking currently has the greatest impact on urban driving. The ...
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#1Don MacKenzie (UW: University of Washington)H-Index: 9
#2John B. Heywood (MIT: Massachusetts Institute of Technology)H-Index: 46
Quantitative measurements of historic improvements in fuel efficiency technology help to illuminate the feasibility of future fuel economy standards. Past investigations have produced widely varying estimates of this rate of improvement, though all seem to indicate that fuel consumption reductions implied by the 2025 U.S. CAFE standards cannot be met solely through technological improvements at historic rates. In this paper, we use the characteristics of U.S. cars between 1975 and 2009 to estima...
12 CitationsSource
#1Patrick Smith (MIT: Massachusetts Institute of Technology)H-Index: 2
#2Wai K. Cheng (MIT: Massachusetts Institute of Technology)H-Index: 18
Last. John B. Heywood (MIT: Massachusetts Institute of Technology)H-Index: 46
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2 CitationsSource
#1Patrick Smith (MIT: Massachusetts Institute of Technology)H-Index: 2
#2John B. Heywood (MIT: Massachusetts Institute of Technology)H-Index: 46
Last. Wai K. Cheng (MIT: Massachusetts Institute of Technology)H-Index: 18
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15 CitationsSource
#1Dennis N. Assanis (UIUC: University of Illinois at Urbana–Champaign)H-Index: 47
#2John B. Heywood (MIT: Massachusetts Institute of Technology)H-Index: 46
A computer simulation of a turbocharged turbo compound diesel engine has been developed to study the effects of low–heat–rejection on system performance. It is shown that high combustion chamber wall surface temperatures cause a significant drop in volumetric efficiency. As a result, even a fully–insulated engine achieves a modest thermal efficiency improvement (less than 5 per cent) over a base line cooled engine. The efficiency benefit can be somewhat increased if a comprehensive optimisation ...
5 Citations
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