Transport Research International Documentation (TRID) https://trid.trb.org/ en-us Copyright © 2024. National Academy of Sciences. All rights reserved. http://blogs.law.harvard.edu/tech/rss tris-trb@nas.edu (Bill McLeod) tris-trb@nas.edu (Bill McLeod) Transport Research International Documentation (TRID) https://trid.trb.org/Images/PageHeader-wTitle.jpg https://trid.trb.org/ Flamelet Generated Manifolds Applied to Dual-Fuel Combustion of Lean Methane/Air Mixtures at Engine Relevant Conditions Ignited by n Dodecane Micro Pilot Sprays https://trid.trb.org/View/1599039 Fri, 20 Sep 2019 15:15:38 GMT https://trid.trb.org/View/1599039 Simultaneous two-dimensional measurement of fuel–air ratio and temperature in a direct-injection spark-ignition engine using a new tracer-pair laser-induced fluorescence technique https://trid.trb.org/View/1625600 Wed, 18 Sep 2019 17:16:17 GMT https://trid.trb.org/View/1625600 Feed-forward control of purge flow in internal combustion engines https://trid.trb.org/View/1625602 Wed, 18 Sep 2019 17:16:17 GMT https://trid.trb.org/View/1625602 Comparison of NOx emissions from hydrous ethanol and n-butanol predicted by an Otto cycle two-zone model using the Zeldovich reactions mechanism https://trid.trb.org/View/1595175 Thu, 23 May 2019 10:23:20 GMT https://trid.trb.org/View/1595175 Assessment of the impact of low-speed-pre-ignition mitigation techniques on emission levels https://trid.trb.org/View/1595173 Thu, 23 May 2019 10:23:20 GMT https://trid.trb.org/View/1595173 Estimation of Charging Efficiency with Gaussian Process for Gasoline Engine https://trid.trb.org/View/1595097 Thu, 23 May 2019 10:23:19 GMT https://trid.trb.org/View/1595097 The Impact of Engine Displacement on Efficiency Loss Pathways in a Highly Dilute Jet Ignition Engine https://trid.trb.org/View/1598409 ~1.6; air-fuel ratio > 23:1) combustion via air dilution is one such combustion mode that provides the benefits of reduced fuel consumption and reduced NOx emissions. Jet ignition is a pre-chamber-based combustion system that enables enleanment beyond what is achievable with traditional spark ignition engines. Previous studies of MAHLE’s Jet Ignition® concept have primarily focused on light-duty gasoline engines. With increasing demand for fuel flexibility, particularly in power generation, and smaller engine displacement for range extender engines in automotive hybrid applications, it is important to characterize how the performance of this technology translates to other fuels and engine displacements. This paper highlights results from a 390cc, high efficiency single-cylinder engine operating ultra-lean. The engine serves as a research platform for jet ignition fueled by compressed natural gas (CNG). The primary intended application is stationary power generation1 but it is possible to ultimately extend the concept to automotive range extender applications as well given the similar two-valve configuration and cylinder displacement. An efficiency loss breakdown based on Thermodynamic First Law analysis is performed, showing that many loss pathways are found to be heavily dependent on ?. Efficiency and emissions trends are compared with results from a larger displacement stand-alone light-duty gasoline engine also utilizing jet ignition. The comparison provides insight into how parameters such as fuel and displacement affect energy loss pathways. A fuel energy breakdown of the multi-cylinder gasoline engine reveals many of the same patterns with enleanment observed with the single-cylinder CNG engine. Jet ignition and its performance in relation to engine geometry and fuel are found to alter the magnitude in which the efficiency losses change with enleanment, while preserving the same general overall trends. ]]> Wed, 24 Apr 2019 09:33:06 GMT https://trid.trb.org/View/1598409 A Physical-Based Approach for Modeling the Influence of Different Operating Parameters on the Dependency of External EGR Rate and Indicated Efficiency https://trid.trb.org/View/1571259 Tue, 11 Dec 2018 17:25:36 GMT https://trid.trb.org/View/1571259 Lean Burn Combustion Influence on Stratified Charge Ethanol Direct Injection Engine https://trid.trb.org/View/1461777 Mon, 29 Oct 2018 09:34:04 GMT https://trid.trb.org/View/1461777 New Exhaust Emission Control System with Two A/F Sensors https://trid.trb.org/View/1462380 Tue, 31 Jul 2018 12:09:33 GMT https://trid.trb.org/View/1462380 Development of High Accuracy Rear A/F Sensor https://trid.trb.org/View/1462396 Mon, 23 Jul 2018 16:32:30 GMT https://trid.trb.org/View/1462396 Advanced Air-Fuel Ratio Sensor for Improved Detectability of Air-Fuel Ratio Imbalance https://trid.trb.org/View/1500241 Fri, 29 Jun 2018 10:35:31 GMT https://trid.trb.org/View/1500241 Investigation of the Impact of Lean Mixtures on the Performance of GDI Engines https://trid.trb.org/View/1446401 Fri, 29 Jun 2018 10:32:15 GMT https://trid.trb.org/View/1446401 Investigation on Applying Model Predictive Control for Air Fuel Ratio Control in Transient State https://trid.trb.org/View/1512549 Thu, 28 Jun 2018 14:01:34 GMT https://trid.trb.org/View/1512549 Investigation about On-line Adaptation of Model Predictive Control for Air Fuel Ratio Control in Transient State https://trid.trb.org/View/1512483 Mon, 25 Jun 2018 13:49:47 GMT https://trid.trb.org/View/1512483