Abstract: This brief addresses the emission reduction of spark ignition engines by proposing a new control to regulate the air-fuel ratio (AFR) around the ideal value. After revisiting the engine ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Khadija Khartit is a strategy, investment, and funding expert, and an educator of fintech ...

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CHESAPEAKE, Va. — Gov. Glenn Youngkin on Friday announced that LS Cable & System Ltd. will invest $689 million to expand manufacturing operations in Chesapeake, a move officials say will create more ...