William R. Leppard

1.5k total citations
41 papers, 1.3k citations indexed

About

William R. Leppard is a scholar working on Fluid Flow and Transfer Processes, Automotive Engineering and Computational Mechanics. According to data from OpenAlex, William R. Leppard has authored 41 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Fluid Flow and Transfer Processes, 23 papers in Automotive Engineering and 11 papers in Computational Mechanics. Recurrent topics in William R. Leppard's work include Vehicle emissions and performance (23 papers), Advanced Combustion Engine Technologies (23 papers) and Combustion and flame dynamics (8 papers). William R. Leppard is often cited by papers focused on Vehicle emissions and performance (23 papers), Advanced Combustion Engine Technologies (23 papers) and Combustion and flame dynamics (8 papers). William R. Leppard collaborates with scholars based in United States, Poland and India. William R. Leppard's co-authors include William J. Pitz, J. A. Eng, Charles K. Westbrook, E. B. Christiansen, William J. Koehl, Vaughn R. Burns, C.K. Westbrook, Thompson M. Sloane, Robert M. Reuter and Jack D. Benson and has published in prestigious journals such as AIChE Journal, SAE technical papers on CD-ROM/SAE technical paper series and Combustion Science and Technology.

In The Last Decade

William R. Leppard

40 papers receiving 1.1k citations

Peers

William R. Leppard

FFTP

Ronald D. Matthews United States

Nick Collings United Kingdom

J G Hawley United Kingdom

C. Scott Sluder United States

F. E. Corcione Italy

Graham T. Reader Canada

Dave Richardson United Kingdom

Kwang Min Chun South Korea

Öivind Andersson Sweden

Teemu Sarjovaara Finland

Ronald D. Matthews United States

William R. Leppard

1.1k ×1.1

FFTP

835 ×1.2

522 ×1.0

433 ×1.3

248 ×1.1

Citations per year, relative to William R. Leppard William R. Leppard (= 1×) peers Ronald D. Matthews

Countries citing papers authored by William R. Leppard

Since Specialization

Citations

This map shows the geographic impact of William R. Leppard's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by William R. Leppard with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites William R. Leppard more than expected).

Fields of papers citing papers by William R. Leppard

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by William R. Leppard. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by William R. Leppard. The network helps show where William R. Leppard may publish in the future.

Co-authorship network of co-authors of William R. Leppard

This figure shows the co-authorship network connecting the top 25 collaborators of William R. Leppard. A scholar is included among the top collaborators of William R. Leppard based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with William R. Leppard. William R. Leppard is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Eng, J. A., William R. Leppard, & Thompson M. Sloane. (2002). The Effect of POx on the Autoignition Chemistry of n-Heptane and Isooctane in an HCCI Engine. SAE technical papers on CD-ROM/SAE technical paper series. 1. 48 indexed citations

Eng, J. A., William R. Leppard, Paul Najt, & Frederick L. Dryer. (1998). The Effect of Fuel Composition on Hydrocarbon Emissions from a Spark Ignition Engine: iso-Octane/Toluene and n-Octane/Toluene Fuel Mixtures. SAE technical papers on CD-ROM/SAE technical paper series. 10 indexed citations

Curran, Henry J., P. Gaffuri, William J. Pitz, Charles K. Westbrook, & William R. Leppard. (1996). Autoignition chemistry in a motored engine: An experimental and kinetic modeling study. Symposium (International) on Combustion. 26(2). 2669–2677. 45 indexed citations

Roberts, Charles E., Ronald D. Matthews, & William R. Leppard. (1996). Development of a Semi-Detailed Kinetics Mechanism for the Autoignition of Iso-Octane. SAE technical papers on CD-ROM/SAE technical paper series. 1. 9 indexed citations

Leppard, William R., William J. Koehl, Jack D. Benson, et al.. (1995). Effects of Gasoline Properties (T50, T90, and Sulfur) on Exhaust Hydrocarbon Emissions of Current and Future Vehicles: Modal Analysis - The Auto/Oil Air Quality Improvement Research Program. SAE technical papers on CD-ROM/SAE technical paper series. 1. 16 indexed citations

Curran, Henry J., P. Gaffuri, William J. Pitz, Charles K. Westbrook, & William R. Leppard. (1995). Autoignition Chemistry of the Hexane Isomers: An Experimental and Kinetic Modeling Study. SAE technical papers on CD-ROM/SAE technical paper series. 1. 35 indexed citations

Koehl, William J., Jack D. Benson, Vaughn R. Burns, et al.. (1993). Comparison of Effects of MTBE and TAME on Exhaust and Evaporative Emissions — Auto/Oil Air Quality Improvement Research Program. SAE technical papers on CD-ROM/SAE technical paper series. 1. 8 indexed citations

Koehl, William J., Robert A. Gorse, Jack D. Benson, et al.. (1993). Effects of Heavy Hydrocarbons in Gasoline on Exhaust Mass Emissions, Air Toxics, and Calculated Reactivity - Auto/Oil Air Quality Improvement Research Program. SAE technical papers on CD-ROM/SAE technical paper series. 1. 27 indexed citations

Leppard, William R., Jack D. Benson, Vaughn R. Burns, et al.. (1993). How Heavy Hydrocarbons in the Fuel Affect Exhaust Mass Emissions: Correlation of Fuel, Engine-Out, and Tailpipe Speciation — The Auto/Oil Air Quality Improvement Research Program. SAE technical papers on CD-ROM/SAE technical paper series. 1. 18 indexed citations

10.

Koehl, William J., Jack D. Benson, Vaughn R. Burns, et al.. (1993). Fuel Effects in Auto/Oil High Emitting Vehicles. SAE technical papers on CD-ROM/SAE technical paper series. 31 indexed citations

11.

Leppard, William R., Jack D. Benson, Vaughn R. Burns, et al.. (1993). How Heavy Hydrocarbons in the Fuel Affect Exhaust Mass Emissions: Modal Analysis — The Auto/Oil Air Quality Improvement Research Program. SAE technical papers on CD-ROM/SAE technical paper series. 1. 6 indexed citations

12.

Leppard, William R., et al.. (1992). Effects of Gasoline Composition on Vehicle Engine-Out and Tailpipe Hydrocarbon Emissions - The Auto/Oil Air Quality Improvement Research Program. SAE technical papers on CD-ROM/SAE technical paper series. 1. 51 indexed citations

13.

Leppard, William R.. (1991). The Autoignition Chemistries of Octane-Enhancing Ethers and Cyclic Ethers: A Motored Engine Study. SAE technical papers on CD-ROM/SAE technical paper series. 1. 34 indexed citations

14.

Pitz, William J., Charles K. Westbrook, & William R. Leppard. (1988). Autoignition chemistry of N-butane in a motored engine. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information). 1 indexed citations

15.

Leppard, William R.. (1988). The Autoignition Chemistry of Isobutane: A Motored Engine Study. SAE technical papers on CD-ROM/SAE technical paper series. 1. 30 indexed citations

16.

Leppard, William R.. (1985). A Detailed Chemical Kinetics Simulation of Engine Knock. Combustion Science and Technology. 43(1-2). 1–20. 52 indexed citations

17.

Leppard, William R., et al.. (1976). ASSESSMENT OF AUTOMOTIVE SULFATE EMISSION CONTROL TECHNOLOGY. 2 indexed citations

18.

Leppard, William R., et al.. (1975). Control of Automotive Sulfate Emissions. SAE technical papers on CD-ROM/SAE technical paper series. 1. 9 indexed citations

19.

Christiansen, E. B. & William R. Leppard. (1974). Steady-State and Oscillatory Flow Properties of Polymer Solutions. Transactions of the Society of Rheology. 18(1). 65–86. 55 indexed citations

20.

Leppard, William R.. (1974). SULFATE CONTROL TECHNOLOGY ASSESSMENT, PHASE I: LITERATURE SEARCH AND ANALYSIS. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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