Download Automotive spark-ignited direct-injection gasoline engines by F. Zhao, M.-C. Lai, D.L. Harrington PDF

By F. Zhao, M.-C. Lai, D.L. Harrington

The method of gasoline injection, spray atomization and vaporization, cost cooling, combination guidance and the keep an eye on of in-cylinder air movement are all being actively researched and this paintings is reviewed intimately and analyzed. the hot applied sciences comparable to high-pressure, common-rail, gas injection platforms and swirl-atomizing fuel gas injections are mentioned intimately, as those applied sciences, in addition to desktop regulate services, have enabled the present new exam of an previous target; the direct-injection, stratified-charge (DISC), gas engine. The past paintings on DISC engines that's proper to present GDI engine improvement can be reviewed and mentioned.

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T. ~au3 u! + d / " l v la OVtlZ ",_4 F. Zhao et al. / Progress in Energy and Combustion Science 25 (1999) 437-562 50 [ l _Small I C S ~ - I ~ I~ I Medium 40 467 Injection Pressure:7 Injection Amount:15 mm3 Pulse Duration:10 Hz Fluid: Laws 30 10 *-' 20 U ¢) Differences in ICS ,ram o (J \ / 10 k 20 40 Collector 60 80 Angle 100 deg. :10 MPa 14.

Iii~ii~'~ I a I b c Fig. 35. Mixture preparation strategies for GDI combustion systems [57]: (a) swirl-based systems with centrally mounted injector; (b) swirl-based systems with centrally mounted spark plug; (c) tumblebased systems; and (d) squish-based systems. stratification. It should be noted that regardless of the classification, the stratification is generally achieved by some combination of these three mechanisms, in which the relative contribution of each individual process varies. The majority of GDI combustion systems that have been developed and reported to date, including the classic DISC engine concepts, utilize in-cylinder air swirl as the primary in-cylinder air motion.

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