Performance and Combustion Characteristics of Direct-Injection Stratified-Charge Rotary Engines PDF Download
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Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781724674722 Category : Languages : en Pages : 30
Book Description
Computer simulations of the direct-injection stratified-charge (DISC) Wankel engine have been used to calculate heat release rates and performance and efficiency characteristics of the 1007R engine. Engine pressure data have been used in a heat release analysis to study the effects of heat transfer, leakage, and crevice flows. Predicted engine performance data are compared with experimental test data over a range of engine speeds and loads. An examination of methods to improve the performance of the Wankel engine with faster combustion, reduced leakage, higher compression ratio, and turbocharging is presented. Nguyen, Hung Lee Glenn Research Center NASA-TM-100134, E-3684, NAS 1.15:100134 RTOP 505-62-11
Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781724674722 Category : Languages : en Pages : 30
Book Description
Computer simulations of the direct-injection stratified-charge (DISC) Wankel engine have been used to calculate heat release rates and performance and efficiency characteristics of the 1007R engine. Engine pressure data have been used in a heat release analysis to study the effects of heat transfer, leakage, and crevice flows. Predicted engine performance data are compared with experimental test data over a range of engine speeds and loads. An examination of methods to improve the performance of the Wankel engine with faster combustion, reduced leakage, higher compression ratio, and turbocharging is presented. Nguyen, Hung Lee Glenn Research Center NASA-TM-100134, E-3684, NAS 1.15:100134 RTOP 505-62-11
Author: Henrik Hoffmeyer Publisher: Logos Verlag Berlin GmbH ISBN: 3832530797 Category : Technology & Engineering Languages : en Pages : 193
Book Description
In spite of progress in the development of alternative powertrain systems and energy sources, the internal combustion and all its derivates still are and will be the main powertrain for automobiles. In SI-engines, several approaches compete with each other like the controlled auto ignition (CAI or HCCI), throttle-free load control using variable valvetrains, stratified mixture formation with lean engine operation or highly turbo charged downsizing concepts all combined with gasoline direct injection. The presented work makes a contribution for a deeper understanding of the combustion process of a turbo charged direct injection engine operating with external EGR as well as lean stratified mixture. Using detailed test bench investigations and introducing a new optical measurement tool, the combustion process is described in detail focusing on the occurrence of non-premixed combustion phenomena. The influence of engine parameters like global and local air-/fuel ratio, external EGR and fuel rail pressure as well as the influence of fuel parameters are discussed giving a characterization of the combustion process of stratified engine operation. Furthermore, the influences of non-inert exhaust gas components on engine knock tendency are investigated using external EGR with an EGR catalyst. Opposing the results to numerical analysis, combustion characteristics of turbo charged DISI-engines are presented.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The objective of the research is to aid the development of stratified charge rotary engines by experimentally implementing and testing concepts for optimal charge stratification. To that end a rotary engine test facility has been built. This facility includes an RC1-60 rotary engine built by Curtiss Wright which was coupled to a GE 60 hp dynamometer the external wiring of which had to be mostly reconstructed. Separate rotor lubrication and cooling systems and engine housing cooling systems were designed and built. Intake and exhaut systems were planned and constructed. A fuel injection system was chosen, purchased, and installed. Once these systems were all installed and operating, engine test data was taken to compare with data taken by Curtiss Wright under similar conditions and found to be in reasonable agreement. The data indicates that the performance of the Curtiss Wright direct injection stratified charge rotary engine is comparable to that of its reciprocating counterpart.
Author: National Aeronautics and Space Administration (NASA)
Author: National Aeronautics and Space Administration (NASA)
Author: Hung Lee Nguyen
Author: Hung Lee Nguyen
Author: Henrik Hoffmeyer
Author: Eric Norbert Balles
Author: Takumi Muroki
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Author: F. V. Bracco