Caterpillar Inc.

Robert Michael Mcdavid

Jonathan William Anders

Chad Palmer Koci

Gaurav Vasudeva

Timothy Bazyn

Richard W Kruiswyk

Fang Guo

Jay Robert Steffen

Diego Bernardi Bestel

Operating an engine includes moving a piston toward a top-dead-center position in a cylinder, and directly injecting a gaseous hydrogen fuel into the cylinder in an injection path targeting a center cone in a combustion bowl of the piston. The gaseous hydrogen fuel is impinged upon an outer cone surface, and fluids advanced upwardly along a reentrant bowl wall toward a bowl throat opening. Squished fluids are advanced from a squish volume into the reentrant bowl throat, to produce a combined mixing flow of the advanced fluids and the squished fluids around a flow axis extending circumferentially around a piston center axis. Related apparatus is also disclosed.

Engine system, piston, and operating method for pseudo-tumble mixing of hydrogen fuel and air

A power system may include a high-speed flywheel connected to an engine of a machine; a battery; a motor-generator unit (MGU) connected to the engine and the battery; and a turbocharger connected to the engine. One or more of the high-speed flywheel, the battery and the MGU, or the turbocharger may be configured to provide supplemental power to power provided by the engine to operate the machine, or provide replacement power when no power is provided by the engine to operate the machine.

Power system for a machine

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Dunlap, IL, United States of America

Robert Michael Mcdavid