The Performance Characteristics of an Production Oriented Air Hybrid Powertrain

Experimental studies of the air hybrid engine charging operation

“…In the study by Lee et al, 9 the authors proposed two air hybrid concepts for the engine with either single intake port or joint intake port. The Brunel second air hybrid system is designed for the engine with joint intake port.…”

“…The Brunel second air hybrid system is designed for the engine with joint intake port. 9 The reed valve is installed before the joint intake port to introduce air flow, no matter in the normal firing mode or the compressor mode. The check valve is also installed to guide the in-cylinder compressed air to the air tank.…”

“…In [7][8][9], a simplified approach to achieve air hybrid operation was proposed by the authors. It utilizes a new intake system and cam profile switching (CPS) devices and allows the engine to switch between the air hybrid operation and normal engine operation with no modification to the cylinder head and combustion system, so that the normal combustion engine operation is not compromised.…”

Theoretical and experimental studies of air-hybrid engine operation with fully variable valve actuation

“…In light of the cost and complexity involved, alternative approaches to air-hybrid operations based on the current technologies would be preferred for production purposes in order to gain most benefits of the air-hybrid technology [12,13].…”

Analysis of a novel mild air hybrid engine technology, RegenEBD, for buses and commercial vehicles

“…Zhao et al 20 and Lee et al 21,22 proposed a simplified approach to achieve air hybrid operation. The approach used a new intake system and cam profile switching (CPS) devices and allowed the engine to switch between the air hybrid operation and normal engine operation.…”