公开(公告)号：US20240084751A1

公开(公告)日：2024-03-14

申请号：US17930892

申请日：2022-09-09

Applicant: PACCAR Inc

Inventor： Trevor OTT ,  Maarten MEIJER ,  Stephen CIATTI ,  Brandon ROUSE

IPC: F02D41/00 ,  F02B37/12 ,  F02B39/10 ,  F02D41/14 ,  F02D41/18

CPC classification number: F02D41/0007 ,  F02B37/12 ,  F02B39/10 ,  F02D41/0087 ,  F02D41/1454 ,  F02D41/18 ,  F02B2037/122 ,  F02D2200/101

Abstract: Providing additional mass air flow to an engine of a vehicle to expand an operating range of cylinder deactivation (CDA) is provided. Aspects of the present disclosure describe a method and system to provide additional mass air flow to an engine using an auxiliary air source coupled to a turbocharger. When a low air-to-fuel ratio state is determined in association with operating the vehicle in CDA mode, the auxiliary air source is activated to assist the turbocharger with increase the supply of supercharged intake air to the engine. Accordingly, the operating range of CDA is expanded.

公开(公告)号：US20240254935A1

公开(公告)日：2024-08-01

申请号：US18635568

申请日：2024-04-15

Applicant: PACCAR Inc

Inventor： Trevor OTT ,  Maarten MEIJER ,  Stephen CIATTI ,  Brandon ROUSE

IPC: F02D41/00 ,  F02B37/12 ,  F02B39/10 ,  F02D41/14 ,  F02D41/18

CPC classification number: F02D41/0007 ,  F02B37/12 ,  F02B39/10 ,  F02D41/0087 ,  F02D41/1454 ,  F02D41/18 ,  F02B2037/122 ,  F02D2200/101

Abstract: Providing additional mass air flow to an engine of a vehicle to expand an operating range of cylinder deactivation (CDA) is provided. Aspects of the present disclosure describe a method and system to provide additional mass air flow to an engine using an auxiliary air source coupled to a turbocharger. When a low air-to-fuel ratio state is determined in association with operating the vehicle in CDA mode, the auxiliary air source is activated to assist the turbocharger with increase the supply of supercharged intake air to the engine. Accordingly, the operating range of CDA is expanded.