公开(公告)号：US11028758B2

公开(公告)日：2021-06-08

申请号：US16627310

申请日：2017-07-24

Applicant: VOLVO TRUCK CORPORATION ,  Stephen Geyer

Inventor： Stephen Geyer

IPC: F02B27/04 ,  F01N9/00 ,  F01N13/00 ,  F01N3/021 ,  F01N3/20 ,  F01N3/28 ,  F01N11/00

Abstract: An exhaust after-treatment system includes a first set of exhaust after-treatment components, a second set of exhaust after-treatment components, an inlet to the exhaust after-treatment system, an outlet from the exhaust after-treatment system, and a valve and conduit arrangement configurable in a plurality of modes, in a first mode, exhaust gas entering the inlet flows through the second set of exhaust after-treatment components, then through the first set of exhaust after-treatment components, and then through the outlet. In a second mode, exhaust gas entering the inlet flows through the second set of exhaust after-treatment components without flowing through the first set of exhaust after-treatment components, and then through the outlet in a third mode, exhaust gas entering the inlet flows through the first set of exhaust after-treatment components, then through the second set of exhaust after-treatment components, and then through the outlet.

公开(公告)号：US11053835B2

公开(公告)日：2021-07-06

申请号：US16980388

申请日：2018-05-10

Applicant: VOLVO TRUCK CORPORATION ,  Stephen Geyer ,  Dale Hoover

Inventor： Stephen Geyer ,  Dale Hoover

IPC: F01N9/00 ,  F02D41/02 ,  F01N3/023

Abstract: A method and system are provided for assessing engine faults. The method includes measuring actual diesel particulate filter (DPF) soot loading, determining expected DPF soot loading, aid determining that a possible engin component fault is an actual engine component fault by determining that measured actual DPF soot loading exceeds the expected DPF soot loading.

公开(公告)号：US10738720B2

公开(公告)日：2020-08-11

申请号：US15513055

申请日：2014-09-29

Applicant: VOLVO TRUCK CORPORATION ,  Stephen Geyer

Inventor： Stephen Geyer

IPC: F02D41/00 ,  F01B7/02 ,  F02B75/28 ,  F02B37/04 ,  F02M26/08 ,  F02B75/02 ,  F02D41/14

Abstract: A method includes operating an air boosting apparatus of a two-stroke, opposed piston engine as a function of one or more factors including a first engine speed, a first torque, demand, a first altitude, a first transient rate, and one or more first ambient conditions to provide a first pressure S ratio (PR} of pre-turbine pressure (PTP) versus turbocharger compressor discharge pressure (CDP} and a first air-to-fuel ratio (AFR).

公开(公告)号：US10683782B2

公开(公告)日：2020-06-16

申请号：US15512561

申请日：2014-09-29

Applicant: VOLVO TRUCK CORPORATION

Inventor： Stephen Geyer

IPC: F01L13/06 ,  F02B75/28 ,  F02B25/08 ,  F01L13/08 ,  F01L1/12 ,  F02D13/02 ,  F02D13/04 ,  F01B7/14 ,  F01L1/047 ,  F01L1/18 ,  F01L13/00 ,  F02B75/02 ,  F01L3/00

Abstract: A two-stroke, opposed-piston engine includes a cylinder with an inlet piston controlled inlet port and an exhaust piston controlled exhaust port, the cylinder defining a combustion chamber with the inlet piston and the exhaust piston, a charge air channel in flow communication with the inlet port, a conduit extending directly from the combustion chamber to the charge air channel, and a valve arranged to selectively open and close flow communication through the conduit.

公开(公告)号：US20170218799A1

公开(公告)日：2017-08-03

申请号：US15512561

申请日：2014-09-29

Applicant: VOLVO TRUCK CORPORATION

Inventor： Stephen Geyer

IPC: F01L13/06 ,  F01L13/00 ,  F01L1/047 ,  F01L1/18 ,  F02B75/02 ,  F02B75/28

Abstract: A two-stroke, opposed-piston engine includes a cylinder with an inlet piston controlled inlet port and an exhaust piston controlled exhaust port, the cylinder defining a combustion chamber with the inlet piston and the exhaust piston, a charge air channel in flow communication with the inlet port, a conduit extending directly from the combustion chamber to the charge air channel, and a valve arranged to selectively open and close flow communication through the conduit.

公开(公告)号：US10941660B2

公开(公告)日：2021-03-09

申请号：US16476273

申请日：2017-03-20

Applicant: VOLVO TRUCK CORPORATION ,  Stephen Geyer

Inventor： Stephen Geyer

IPC: F01B7/14 ,  F02B75/28

Abstract: In an opposed piston engine, an inlet piston crankshaft axis and an exhaust piston crankshaft axis both extend parallel to a central cylinder plane extending through a centerpoint of a cylinder of the engine and along a central axis of the cylinder. The inlet piston crankshaft axis and the exhaust piston crankshaft axis are both offset from the central cylinder plane. The inlet piston and the exhaust piston linked to the inlet piston crankshaft and the exhaust piston crankshaft are arranged so that the inlet piston closes an inlet port as the inlet piston moves from its bottom dead center toward its top dead center at substantially a same time as the exhaust piston closes the exhaust port as the exhaust piston moves from its bottom dead center toward its top dead center.

公开(公告)号：US20200003058A1

公开(公告)日：2020-01-02

申请号：US16476273

申请日：2017-03-20

Applicant: Stephen GEYER ,  VOLVO TRUCK CORPORATION

Inventor： Stephen Geyer

IPC: F01B7/14 ,  F02B75/28

Abstract: In an opposed piston engine, an inlet piston crankshaft axis and an exhaust piston crankshaft axis both ex tend parallel to a central cylinder plane extending through a centerpoint of a cylinder of the engine and along a central axis of the cylinder. The inlet piston crankshaft axis and the exhaust piston crankshaft axis are both offset from the central cylinder plane. The inlet piston and the exhaust piston linked to the inlet piston crankshaft and the exhaust piston crankshaft are arranged so that the inlet piston closes an inlet port as the inlet piston moves from its bottom dead center toward its top dead center at substantially a same time as the exhaust piston closes the exhaust port as the exhaust piston moves from its bottom dead center toward its top dead center.

公开(公告)号：US20170248088A1

公开(公告)日：2017-08-31

申请号：US15513055

申请日：2014-09-29

Applicant: VOLVO TRUCK CORPORATION

Inventor： Stephen Geyer

IPC: F02D41/00 ,  F01B7/02 ,  F02D41/14 ,  F02B75/02

CPC classification number: F02D41/0007 ,  F01B7/02 ,  F02B37/04 ,  F02B75/02 ,  F02B75/28 ,  F02B2075/025 ,  F02D41/1454 ,  F02D2200/024 ,  F02D2200/101 ,  F02D2200/70 ,  F02M26/08 ,  Y02T10/144

Abstract: A method includes operating an air boosting apparatus of a two-stroke, opposed piston engine as a function of one or more factors including a first engine speed, a first torque, demand, a first altitude, a first transient rate, and one or more first ambient conditions to provide a first pressure S ratio (PR} of pre-turbine pressure (PTP) versus turbocharger compressor discharge pressure (CDP} and a first air-to-fuel ratio (AFR).