Cummins Inc.

Cummins Ip, Inc.

Cummins Intellectual Property, Inc.

Jason W Mackey

David M Barnes

Adam C Cecil

Michael Haas

Michael J Ruth

Rishikesh Venugopal

Ryo Fuchinoue

John M Deur

Ryo Fucinone

Srikanth Aravamuthan

An internal combustion engine includes a first cylinder block, a first head, a first overhead structure, a second cylinder block, a second head, a second overhead structure, a first through-bolt aperture, and a first through-bolt. The first head is in contact with the first cylinder block. The first overhead structure is in contact with the first head opposite the first cylinder block. The second cylinder block is in contact with the first cylinder block opposite the first head. The second head is in contact with the second cylinder block opposite the first cylinder block. The second overhead structure is in contact with the second head opposite the second cylinder block. The first through-bolt aperture is defined through the first overhead structure, the first head, the first cylinder block, the second cylinder block, the second head, and the second overhead structure.

Internal combustion engine including through-bolt aperture and single through-bolt

A system and method of exhaust gas recirculation (EGR) in an internal combustion engine are provided. The EGR system includes a first EGR flow path and a second EGR flow path independent of the first EGR flow path that are each configured to recirculate high pressure exhaust from the exhaust system back to the engine intake system. The system includes a controller in operable communication with the EGR system configured to selectively control an amount of EGR flow through at least one of the first and second EGR flow paths.

Systems and methods for exhaust gas recirculation

A diesel engine includes a cylinder block having a cylinder cavity defined therein. A cylinder head is coupled to the cylinder block and includes a lower semi-hemispherical surface defined thereon that defines an upper boundary of a combustion chamber. The engine includes a piston slideably disposed within the cylinder cavity that includes a piston crown having an upper surface configured to define a first portion of a lower boundary of the combustion chamber. The upper surface of the piston crown includes an axi-symmetric semi-hemispherical shape configured to correspond to the lower semi-hemispherical surface of the cylinder head.

Diesel piston with semi-hemispherical crown

An internal combustion engine and related components and methods of manufacturing and implementing an internal combustion engine and related components. The internal combustion engine includes a base, a cylinder block mounted onto the base, a cylinder head mounted onto the block, and a structural overhead member mounted onto the cylinder head, such that the cylinder head is positioned between the cylinder block and the structural overhead member. At least one through-bolt positioned in a through-bolt opening, the through-bolt opening extending from the base to the structural overhead member through the cylinder block and the cylinder head to couple the base, the cylinder block, the cylinder head and the structural overhead member together.

Internal combustion engine

A piston and an engine are provided that includes various precise configuration parameters, including dimensions, shape and/or relative positioning of the combustion chamber features, resulting in a combustion process that yields improved mixing of fuel and intake air and increased uniformity of load on the engine pistons. The piston provides a piston bowl with a concave curvilinear portion that may be semi-spherical and extends inwardly to a depth; an angled surface extends inwardly from the crown surface to intersect the concave curvilinear portion at an edge at a depth; and a curved surface that extends inwardly from the crown surface to intersect the concave curvilinear portion at a tangent at a depth. The angled surface may be part of a frusto-conical surface that may extend from both sides of the angled surface to an area proximate the curved surface.

Piston and combustion chamber

The present invention relates to an internal combustion engine cylinder head having an exhaust gas recirculation passage formed therein. The exhaust gas recirculation passage extending along the length of the cylinder head casting and disposed in a heat transfer relationship with a water jacket located within the cylinder head.

Cylinder head having an internal exhaust gas recirculation passage

The present invention relates to an internal combustion engine cylinder head having an exhaust gas recirculation passage formed therein. The exhaust gas recirculation passage extending along the length of the cylinder head casting and disposed in a heat transfer relationship with a water jacket located within the cylinder head. One form of the present invention includes heat transfer members within the passage to increase the heat transfer between the exhaust gas flowing in the passage and the cylinder head.

Growing community of inventors

Columbus, IN, United States of America

Jason W Mackey