Cummins

An internal combustion engine system includes an engine with a plurality of pistons housed in respective ones of a plurality of cylinders. A valve train is provided for opening and closing intake and exhaust valves of the cylinders during nominal engine operations. The valve train is also configured for cylinder deactivation and to provide one or more selected lift profiles for opening and closing of the intake and/or exhaust valves.

The present invention relates to a motor winding design method that enables the implementation of high parallel paths per phase in both high-speed and low-speed electric motors. The method involves using multiple parallel paths per phase, where each parallel path occupies one slot per pole and the winding configuration incorporates both forward and backward parallel paths. The design features a layer-group winding configuration with at least two layers, with jumper wires connecting different layer groups. Additionally, the method includes a flexibility mechanism that supports scalable configurations for various motor types, including 3-phase and 6-phase systems. This approach enhances motor performance and efficiency while providing adaptable design options.

A mass is movable into and out of contact with a valve seat to control flow through an opening of the valve seat. The movable mass is operably coupled to an electronic actuator. A drive current is supplied to the electronic actuator in a manner that induces a mechanical resonance in the movable mass to release the movable mass from the valve seat in response to a release condition, such as when the movable mass is stuck to the valve seat due to a temperature condition.

A piston having a piston body with an upper end opposite a lower end, between which a center axis extends. The piston body includes a piston bowl having a piston bowl surface with a half section profile that includes a central bottom portion and a target side wall that extends between first and second separation cliffs. The central bottom portion extends radially at a central slope from the center axis to the first separation cliff. The target side wall extends at a slope that is different from the central slope. The target side wall receives fuel from a fuel injector at a spray angle that avoids contact with the first separation cliff for better fuel to air mixing to delay peak of combustion rate. The second separation cliff extends at a slope that directs the fuel plume away from and detaches from the second separation cliff for peak combustion.

A battery pack module for heavy equipment vehicles, such as mining trucks, is presented herein. The battery pack module (176) may include multiple layers of battery trays (502), each tray including multiple battery packs (504). The battery pack module may further include a cooling line system and a battery cabling system that each are connected to the battery pack layers in parallel. The battery pack module may have a unibody design to reduce weight and cost of manufacturing.

Methods and systems are disclosed for identifying, generating, and/or commanding operation parameters of a battery system (106) of a hybrid mining haul truck (100). The methods and systems disclosed herein may include sensors (112. 110) operationally coupled to a battery system (106) and/or an engine (104) of a vehicle to obtain characteristics related to a route of a vehicle and/or the vehicle's operation, which are configured to transmit signals to one or more processor functions for evaluation and generation of a battery system operation request or command.

A method of providing lubricant to a bearing system of an engine and piston cooling nozzles of the engine, comprising: pumping lubricant from a lubricant source to a pump outlet; routing a first portion of the pumped lubricant to the piston cooling nozzles without being filtered; routing a second portion of the pumped lubricant from an outlet of a filter to the bearing system, wherein the second portion of the pumped lubricant is cooled by a cooler.

An engine system (100) includes an engine (102), a crankshaft (104) operatively coupled to the engine (102), a brake assembly (120), and an actuator assembly (140). The brake assembly (120) includes a brake disc (122). The brake disc (122) is coupled to the crankshaft (104). The actuator assembly (140) includes a brake pad (145) and an actuator (142). The brake pad (145) is selectively positionable to contact the brake disc (122). The actuator (142) is configured to selectively position the brake pad (145) to contact the brake disc (122).

A fuel evacuation system includes an outer fluid pathway (150) and an inner fluid pathway (155) arranged therein. The system also includes a controller to control flows of gas and liquid fuel from respective first and second sources, and a sealing member (130) coupled to the inner and outer fluid pathways, where the sealing member is operable between a first and at least one second position. In the first position, the sealing member enables the outer fluid pathway to be fluidly independent from the inner fluid pathway. In the at least one second position, the sealing member couples the outer fluid pathway to the inner fluid pathway. In a first mode, the controller causes liquid fuel from the inner fluid pathway to flow to the outer fluid pathway. In a second mode, the controller is configured to cause gas from the outer fluid pathway to flow to the inner fluid pathway.

In an implementation, an apparatus includes an enclosure (101A, 101B) and an energy module (104A, 104B) included in the enclosure and that includes a battery pack configured to provide an initial voltage. The apparatus further includes a conversion module (106A, 106B) included in the enclosure and that includes a high voltage DC/DC converter (108A, 108B) and an ultra-high voltage DC/DC converter (110A, 110B). The conversion module is configured to receive the initial voltage and output a converted voltage using the high voltage DC/DC converter and the ultra-high voltage DC/DC converter.