SIP, Innovative Combustion Technology,  "Gasoline Combustion Team

Reserch Overviews

Super-lean burn combustion gasoline engines to achieve high efficiency

The “Gasoline Combustion Team for the ” Innovative Combustion Technology” program of ” Cross-ministerial Strategic Innovation Promotion Program (SIP)” by the Cabinet Office, Government of Japan is organized by Keio University as a leader and 22 universities (29 universities as a Cluster university) and has conducted research and development under 4 research groups (High Performance Ignition System Group, Flame Propagation Enhancement Group, Cooling Loss Reduction Group, Fuel and Knock Reduction Group). In addition, the Cycle-to-Cycle Variations Reduction Group and the Modeling Group have been joined the “Gasoline Combustion Team”since 2016, and the “Gasoline Combustion Team” has strengthened the cooperation on research with the “Diesel Combustion Team”, “Loss Reduction Team” and “Controls Team”.
A SIP engine laboratory is built as an open laboratory and is shared by all members of the team. The “Gasoline Combustion Team” has been conducting the research on super-lean burn combustion with a support of the Research Association of Automotive Internal Combustion Engines (AICE) under the strong industry, academia and government collaboration.


Research Facility (Shared Facility)

Shared engine laboratory installed by Keio University to advance the research
Keio University SIP Engine Laboratory at Ono Sokki Technical Center


Test Fuel Standardization

Previous Research

Difficult to examine and to compare data among research entities (universities and companies) due to different fuel constituents

SIP Research

Test fuel standardization among universities by consolidating fuel procurement
・SIP common gasoline fuels ( Regular, Premium)
・SIP common surrogate fuels(TRF,S5R,S5H,S10R,S10H)

*”Constituents and Characteristics of SIP Gasoline Surrogate Fuels” is published in the “Download” page.


Research Goal

To drastically improve the gasoline engine thermal efficiency to achieve the target of 50% by 2020 with super-lean burn (super-lean, high intensity flow, high EGR) technology.


Research Subjects and Directions


Concept, Issues and Solutions to Achieve the Goal


Research Introduction (Video) (From press release at the opening of the SIP laboratory)