Cummins Inc.

Cummins Ip, Inc.

Samuel C Geckler

Anthony Kyle Perfetto

Marten H Dane

David J Stroh

J Steven Kolhouse

Govindarajan Kothandaraman

Carlos Alcides Lana

Thomas M Yonushonis

Adrian P Dale

Sudhanshu Talwar

Michael J Cunningham

Adam C Cecil

Ryan Edward Schultz

Karthik Kappaganthu

Michael J Ruth

J Stephen Wills

Rajkumar Subramanian

Madhuri Gandikota

Hongfeng H Wang

Axel Otto Zur Loye

Aleksey Yezerets

Timothy R Frazier

Leon A LaPointe

Daniel J Mohr

Lyle E Kocher

Robin J Bremmer

Steven J Kolhouse

Sriram Satya Srinivas Popuri

Jer-Sheng J Chen

Andrea Beck

Vivek Anand Sujan

Yue-Yun Wang

Neal W Currier

Paul R Miller

Joan M Wills

Yue Yun Wang

Bradlee J Stroia

Stephen E Garrett

James Alexander McEwen

Ying Yuan

Nicholas Kenneth Sharp

Anshul Shambhav

Wole C Akinyemi

Stewart D Sullivan

Michael David Dolton

Anshul Shambav

James J Fier

Low-cost fuel injection systems for internal combustion engines, including vapor fuel engines are provided.

Fuel system

An intake air circuit is structured to transmit intake air from a turbocharger compressor to an intake manifold of an engine. A charge air cooler ('CAC'), a bypass line, and a bypass heater are each positioned along the intake air circuit in parallel with each other. A first control valve is structured to controllably divert the intake air around the CAC. A second control valve is structured to controllably divert the intake air around at least one of the bypass line and the bypass heater. A controller operatively coupled to each of the engine, and the first and second control valves is structured to control each of the first and second control valves to cause the intake air to flow along a determined desired flow path based on each of measured ambient temperature and measured engine load.

Engine intake air system including CAC bypass and separate bypass heater, and high-efficiency spark-ignited direct injection liquid propane engine architectures including same

Systems and methods for thermal management of a direct injection propane fuel system are disclosed that include control a temperature of the fuel tank at or below a desired operating temperature to avoid venting of fuel to atmosphere.

Propane fuel system temperature control systems and methods

A method includes operating a spark ignition engine and flowing low pressure exhaust gas recirculation (EGR) from an exhaust to an inlet of the spark ignition engine. The method includes interpreting a parameter affecting an operation of the spark ignition engine, and determining a knock index value in response to the parameter. The method further includes reducing a likelihood of engine knock in response to the knock index value exceeding a knock threshold value.

System and method for reducing engine knock

Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one primary EGR cylinder and a plurality of non-primary EGR cylinders. The systems, apparatus and methods control the amount of recirculated exhaust gas in a charge flow in response to EGR fraction deviation conditions.

Systems and methods for controlling EGR flow during transient conditions

Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one pair of primary EGR cylinders and a plurality of pairs of non-primary EGR cylinders. The pair of primary EGR cylinders can be connected to an intake with an EGR system that lacks an EGR cooler. In another embodiment, the cylinder pairs include exhaust flow paths that join in the cylinder head to form a common exhaust outlet for each cylinder pair in the cylinder head that is connected directly to the EGR system or to the exhaust system without an exhaust manifold.

Engine arrangements with EGR systems

A system for diagnosing engine braking performance of an engine comprising a plurality of cylinders comprises an exhaust manifold pressure sensor configured to detect an exhaust manifold pressure corresponding to exhaust gas emitted from a plurality of cylinders. A controller is configured to determine an exhaust manifold pressure value corresponding to at least one cylinder of the plurality of cylinders that is being used for engine braking, from an exhaust manifold pressure sensor signal received from the exhaust manifold pressure sensor. The controller is also configured to determine an engine braking value based on the exhaust manifold pressure value.

Systems and methods for engine brake diagnostics and control

Systems, devices, and method are disclosed for differentially cooling an internal combustion engine. A cooling system includes a first cooling circuit configured to lower a temperature of a cooling fluid to a first temperature where the first cooling circuit is configured to dispense a first portion of the cooling fluid to cylinder walls and non-cylinder or non-combustion surfaces of the engine. The cooling system also includes a second cooling circuit configured to lower the temperature of a remaining or second portion of the cooling fluid to a second temperature that is lower than the first temperature where the second cooling circuit is configured to dispense the remaining portion of the cooling fluid to cylinder or combustion surfaces within one or more cylinders of the internal combustion engine.

Engine cooling system and method for a spark ignited engine

A system and method of inducing an operational response change in an operating direct-injection internal combustion engine is provided such that the engine includes a cylinder into which liquid fuel injection is directly performed. The method starts by operating the direct-injection engine using a start of injection (SOI) protocol. At some point during operation, it is determined that a change is desired for a first parameter of engine operation that is at least partially a function of a charge provided to the cylinder (such as the torque output). In response an operational response in the engine is induced by altering the SOI protocol via a first SOI alteration that alters the volumetric efficiency of the cylinder and changes the first parameter.

System and method for control of volumetric efficiency in a direct injection engine

Systems, apparatuses and methods are disclosed that include an internal combustion engine including a plurality of cylinders operable by a valve actuation mechanism including a lifting mechanism having a compression brake valve profile configured to selectively lift the exhaust valves on a downstroke of the cylinders in response to a cranking condition of the internal combustion engine, wherein the compression braking valve profile is phased to the upstroke of the pistons.

Compression release valvetrain design

Systems and methods for internal combustion engine operation with exhaust gas recirculation and turbocharging are disclosed. The systems include an exhaust gas recirculation loop for recirculating exhaust gas flow from a first portion of the cylinders of the engine into an intake system prior to combustion. The system further includes a turbine with first and second inlets for receiving exhaust gas flows from respective first and second parts of the exhaust gas of the remaining portion of the cylinders.

Exhaust gas recirculation and control with twin scroll turbines

Growing community of inventors

Columbus, IN, United States of America

Samuel C Geckler