公开(公告)号：US10344715B2

公开(公告)日：2019-07-09

申请号：US15251844

申请日：2016-08-30

Applicant: GM Global Technology Operations LLC

Inventor： Martino Casetti ,  Darrell W. Burleigh ,  Bruce A. Church

IPC: F02M25/08 ,  F02D41/22 ,  F02D41/00 ,  F02D41/04

Abstract: A fuel vapor control system for a vehicle includes a fuel vapor canister that traps fuel vapor from a fuel tank of the vehicle. A purge valve opens to allow fuel vapor flow to an intake system of an engine and closes to prevent fuel vapor flow to the intake system of the engine. An electrical pump pumps fuel vapor from the fuel vapor canister to the purge valve. A pressure sensor measures a pressure within a conduit at a location between the electrical pump and the purge valve. A purge control module, based on the pressure measured using the pressure sensor at the location between the electrical pump and the purge valve, controls at least one of a speed of the electrical pump and opening of the purge valve.

公开(公告)号：US09771884B2

公开(公告)日：2017-09-26

申请号：US14614778

申请日：2015-02-05

Applicant: GM Global Technology Operations LLC

Inventor： Darrell W. Burleigh ,  Christopher P. Musienko ,  Kenneth C. Swartz

IPC: F02D41/00 ,  F02M25/08 ,  F02D41/30 ,  F02D41/20

CPC classification number: F02D41/004 ,  F02D41/3082 ,  F02D2041/2058 ,  F02M25/0836 ,  F02M25/0854 ,  F02M25/089

Abstract: A system according to the present disclosure includes a pump operating parameter module and a purge flow control module. The pump operating parameter module determines a value of an operating parameter of a purge pump that delivers purge fluid from a canister in an evaporative emissions system to an intake system of an engine. The operating parameter of the purge pump includes at least one of a speed of the purge pump, an amount of current supplied to the purge pump, and an amount of power supplied to the purge pump. The purge flow control module controls at least one of a purge valve and the purge pump to adjust an amount of purge fluid delivered to a cylinder of an engine based on the determined value of the operating parameter of the purge pump.