Affiliation:
1. ZHEJIANG ITTI CENTER
2. ZHEJIANG Geely Holding Group
Abstract
<div class="section abstract"><div class="htmlview paragraph">Under China’s “3060” target of carbon peak and carbon neutrality, heavy
commercial vehicles are a key breakthrough point to promote the automobile
industry to achieve carbon peaking and carbon neutrality goals. Green methanol,
as a clean alternative fuel, are an effective technical route for heavy
commercial vehicles to achieve energy conservation and emission reduction. Based
on a 13L methanol engine, this study fully considers the methanol combustion
characteristics, the ω shape combustion system of the base engine is redesigned
as a pent-roof combustion chamber. The intake port is changed from a swirl port
to a high-tumble port, and the piston crown is also adjusted adaptively. At the
same time, the cam profile, cooling water jacket, intake and exhaust system are
redesigned, and the turbocharger is re-matched according to the physical
properties of methanol. CAE tools and means are used to optimize and determine
the design proposal. Finally, after bench test verification, the thermal
efficiency of the new engine has significantly improved, reaching 45.7%.</div></div>
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