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New high expansion ratio gasoline engine for the TOYOTA hybrid system. Improving engine efficiency with high expansion ratio cycle; Hybrid system yo kobochohi gasoline engine. Kobochohi cycle ni yoru engine no kokoritsuka

Abstract

50% reduction of CO2 and fuel consumption have been achieved with the newly developed gasoline engine for the Toyota Hybrid System. This is achieved due to the combination of electric motors and the internal combustion engine which is optimized in the size, swept volume and heat cycle. By delaying the intake valve close timing a high expansion ratio (13.5:1) cycle has been realized. Electricmotor assist enable to cut the maximum engine speed, and friction loss. A best fuel consumption figure better than 230 g/kWh has been achieved. Elimination of lightload firing, motor assisted quick start and improvement of catalyst warm up makes to achieve the clean emission level such as 1/10 of Japanese `78 regulation limit. 10 refs., 16 figs., 1 tab.
Authors:
Hirose, K; Takaoka, T; Ueda, T; Kobayashi, Y [1] 
  1. Toyota Motor Corp., Aichi (Japan)
Publication Date:
Oct 01, 1997
Product Type:
Conference
Report Number:
ETDE/JP-98753752; CONF-9710216-
Reference Number:
SCA: 330101; 330300; PA: JP-98:0G1200; EDB-98:073943; SN: 98001948864
Resource Relation:
Conference: 1997 Fall Japan Society of Automotive Engineers (JSAE) meeting science lecture, JSAE 1997 nen shuki taikai gakujutsu koenkai, Hiroshima (Japan), 21-23 Oct 1997; Other Information: PBD: 1 Oct 1997; Related Information: Is Part Of Preprint of the Fall 1997 JSAE (Japan Society of Automotive Engineers) Meeting Science Lecture. No. 975; PB: 312 p.; Jidosha gijutsukai 1997 nen shuki taikai gakujutsu koenkai maezurishu. 975
Subject:
33 ADVANCED PROPULSION SYSTEMS; HYBRID SYSTEMS; SPARK IGNITION ENGINES; ELECTRIC MOTORS; THERMAL EFFICIENCY; THERMODYNAMIC CYCLES; EXPANSION; VOLUME; EXHAUST GASES; FRICTION FACTOR; EXHAUST SYSTEMS; CATALYSTS; FUEL CONSUMPTION; COMPRESSION RATIO
OSTI ID:
625032
Research Organizations:
Society of Automotive Engineers of Japan, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE98753752; TRN: JN98G1200
Availability:
Available from Society of Automotive Engineers of Japan Inc., Gobancho 10-2, Chiyoda-ku, Tokyo,(Japan); OSTI as DE98753752
Submitting Site:
NEDO
Size:
pp. 29-32
Announcement Date:

Citation Formats

Hirose, K, Takaoka, T, Ueda, T, and Kobayashi, Y. New high expansion ratio gasoline engine for the TOYOTA hybrid system. Improving engine efficiency with high expansion ratio cycle; Hybrid system yo kobochohi gasoline engine. Kobochohi cycle ni yoru engine no kokoritsuka. Japan: N. p., 1997. Web.
Hirose, K, Takaoka, T, Ueda, T, & Kobayashi, Y. New high expansion ratio gasoline engine for the TOYOTA hybrid system. Improving engine efficiency with high expansion ratio cycle; Hybrid system yo kobochohi gasoline engine. Kobochohi cycle ni yoru engine no kokoritsuka. Japan.
Hirose, K, Takaoka, T, Ueda, T, and Kobayashi, Y. 1997. "New high expansion ratio gasoline engine for the TOYOTA hybrid system. Improving engine efficiency with high expansion ratio cycle; Hybrid system yo kobochohi gasoline engine. Kobochohi cycle ni yoru engine no kokoritsuka." Japan.
@misc{etde_625032,
title = {New high expansion ratio gasoline engine for the TOYOTA hybrid system. Improving engine efficiency with high expansion ratio cycle; Hybrid system yo kobochohi gasoline engine. Kobochohi cycle ni yoru engine no kokoritsuka}
author = {Hirose, K, Takaoka, T, Ueda, T, and Kobayashi, Y}
abstractNote = {50% reduction of CO2 and fuel consumption have been achieved with the newly developed gasoline engine for the Toyota Hybrid System. This is achieved due to the combination of electric motors and the internal combustion engine which is optimized in the size, swept volume and heat cycle. By delaying the intake valve close timing a high expansion ratio (13.5:1) cycle has been realized. Electricmotor assist enable to cut the maximum engine speed, and friction loss. A best fuel consumption figure better than 230 g/kWh has been achieved. Elimination of lightload firing, motor assisted quick start and improvement of catalyst warm up makes to achieve the clean emission level such as 1/10 of Japanese `78 regulation limit. 10 refs., 16 figs., 1 tab.}
place = {Japan}
year = {1997}
month = {Oct}
}