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Jingping Liu

Bio: Jingping Liu is an academic researcher from Hunan University. The author has contributed to research in topics: Combustion & Thermal efficiency. The author has an hindex of 30, co-authored 132 publications receiving 3036 citations.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the combustion and emission fundamentals of high n-butanol/diesel ratio blend with 40% butanol (i.e., Bu40) in a heavy-duty diesel engine were investigated by experiment and simulation at constant engine speed of 1400rpm and an IMEP of 1.0 MPa.

231 citations

Journal ArticleDOI
15 Jun 2013-Energy
TL;DR: In this article, a high-speed direct injection (DI) diesel engine for passenger-car application for varied loads at two representative engine speeds was tested, and the results showed that butanol-diesel blends slightly increased combustion pressure and accelerated burning rate.

174 citations

Journal ArticleDOI
TL;DR: In this paper, the energy utilization efficiency of a gasoline engine and the recovery potential for waste heat energy, energy distribution, and exergy energy characteristics of a naturally aspirated gasoline engine have been studied by combining the methods of energy and ex-ergy analysis.

160 citations

Journal ArticleDOI
01 Feb 2021-Fuel
TL;DR: In this paper, the authors comprehensively review different effective techniques and controlling strategies used in the homogeneous charge compression ignition (HCCI) engine, and also summarize in the tables.

152 citations

Journal ArticleDOI
TL;DR: In this article, an experimental investigation was conducted on a direct injection (DI) diesel engine with exhaust gas recirculation (EGR), coupled with port fuel injection (PFI) of n-butanol.

113 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, the authors presented the hydrogen-based energy system as four corners (stages) of a square shaped integrated whole to demonstrate the interconnection and interdependency of these main stages.

1,090 citations

Journal ArticleDOI
TL;DR: In this article, the properties of butanol are compared with the conventional gasoline, diesel fuel, and some widely used biofuels, i.e. methanol, ethanol, biodiesel.
Abstract: Butanol is a very competitive renewable biofuel for use in internal combustion engines given its many advantages. In this review, the properties of butanol are compared with the conventional gasoline, diesel fuel, and some widely used biofuels, i.e. methanol, ethanol, biodiesel. The comparison of fuel properties indicates that n-butanol has the potential to overcome the drawbacks brought by low-carbon alcohols or biodiesel. Then, the development of butanol production is reviewed and various methods for increasing fermentative butanol production are introduced in detailed, i.e. metabolic engineering of the Clostridia, advanced fermentation technique. The most costive part of the fermentation is the substrate, so methods involved in renewed substrates are also mentioned. Next, the applications of butanol as a biofuel are summarized from three aspects: (1) fundamental combustion experiments in some well-defined burning reactors; (2) a substitute for gasoline in spark ignition engine; (3) a substitute for diesel fuel in compression ignition engine. These studies demonstrate that butanol, as a potential second generation biofuel, is a better alternative for the gasoline or diesel fuel, from the viewpoints of combustion characteristics, engine performance, and exhaust emissions. However, butanol has not been intensively studied when compared to ethanol or biodiesel, for which considerable numbers of reports are available. Finally, some challenges and future research directions are outlined in the last section of this review.

850 citations

Journal ArticleDOI
TL;DR: In this paper, the effects of using higher alcohols ranging from 3-carbon propanol to 20-carbon phytol on combustion, performance and emission characteristics of a wide range of diesel engines under various test conditions.
Abstract: Biofuels have grabbed the attention of engine researchers ever since the oil-crisis and escalating costs of petro-chemicals cropped up in the ׳70s. Ethanol and methanol were the most widely researched alcohols in IC engines. However, the last decade has witnessed significant amount of research in higher alcohols due to the development of modern fermentation processes using engineered micro-organisms that improved yield. Higher alcohols are attractive second/third generation biofuels that can be produced from sugary, starchy and ligno-cellulosic biomass feedstocks using sustainable pathways. The present work reviews the current literature concerning the effects of using higher alcohols ranging from 3-carbon propanol to 20-carbon phytol on combustion, performance and emission characteristics of a wide range of diesel engines under various test conditions. The literature is abound with evidence that higher alcohols reduce carcinogenic particulate emissions that are prevalent in diesel engines. NOx emissions either increased or decreased based on the domination of either cetane number or heat of evaporation. Brake specific fuel consumption (BSFC) of the engine usually suffered due to low energy content of alcohols. A notable feature is that the combination of higher alcohols (like butanol or pentanol), high exhaust gas recirculation (EGR) rates and late injection timing enabled low temperature combustion (LTC) in diesel engines that can simultaneously reduce smoke and NOx emissions with improved engine efficiency. It can be concluded that higher alcohols reduce smoke emissions with their fuel-borne oxygen; enhance air/fuel mixing by offering long ignition delay and eventually replace fossil diesel (partially or wholly) to enable a clean and efficient combustion in compression-ignition engines. The chief thrust areas include developing mutant strains with higher yield, higher tolerance to toxic inhibition and low-cost substrates for fermentation. Further work is required in stipulating optimum blend-fuel characteristics and ensuring the long-term durability of the engines using these fuels.

454 citations

Journal ArticleDOI
TL;DR: The use of latent heat thermal energy storage for thermally buffering vehicle systems is reviewed in this article, where the authors identify material candidates for each vehicle system based on system temperature, specific and volumetric latent heat and thermal conductivity.

331 citations

Journal ArticleDOI
01 Nov 2014-Fuel
TL;DR: In this paper, the effect of butanol-biodiesel blends on the emissions and performance characteristics of a four-stroke, naturally aspirated, water-cooled, indirect injection diesel engine (IDI) was investigated.

241 citations