Complex sentence: Grunauer Alexander Adolfovich (on October, 4th, 1921 in Krasnodar) is a well noted Soviet scientist and expert in the field of problems of regulation of internal combustion engines.
Split into simpler sentences: Grunauer Alexander Adolfovich (on October, 4th, 1921 in Krasnodar)--well noted Soviet scientist. The expert in the field of problems of regulation of internal combustion engines.