Abstract:
A connecting rod 300 unitarily formed in a powder metallurgy process provides a non-homogenous structure. The connecting rod has a piston end 304, a crankshaft end 302, and an interconnecting shank 306. The piston end 304, the crankshaft end 302, and the interconnecting shank 306 are formed of a structural material.
Abstract:
A flow including air and exhaust gas is received at a boost pressure at a plurality of cylinders (103). Exhaust gas is expelled from a first subset of the plurality of cylinders (103) into a first divided exhaust manifold (103). Exhaust gas is expelled from a second subset of the plurality of cylinders into a second divided exhaust manifold (111). The first subset and the second subset are different. An exhaust gas recirculation (EGR) system receives at an EGR inlet (131 or 201 and 211) a part of the exhaust gas from the first divided exhaust manifold (109) and a part of the exhaust gas from the second divided exhaust manifold (111).
Abstract:
A reductant or ammonia canister connector is disclosed having a male component and a female component which reversibly couple to one another to form a secure connection between the canister and a housing for the canister. The male component has a base for connection to an ammonia canister tap, and a main connector extending from the base. The main connector includes an integral second connector for connecting to the NH3 line. Similarly, in various embodiments, the female component is connectable to a feed line and includes a receptacle defined by a sidewall and configured to accept the main connector and second connector of the male component, and a locking mechanism positioned within the receptacle sidewall for alternately engaging and disengaging from the connector when inserted within the receptacle.
Abstract:
A system and method for automatically connecting at least one canister containing a supply of ammonia-containing storage material to a delivery line for use in an exhaust gas aftertreatment system, is disclosed. The system includes a moveable connector, such as a pivotal handle, which includes a coupler for engaging the canister when the handle is in a first position, and automatically disconnecting the coupler from the canister with the handle is in a second position. The system and method may also include an indicator, which signals that the coupler is properly connected to the canister, or alternatively, that the proper connection is not made.
Abstract:
Testing of temperature sensors (28, 30, 32) in an emission control system, such as in an exhaust system (10) of a diesel engine, serves to condition further component and/or system testing by determining that sufficient sensor cooling has occurred and that no sensor is "stuck within range" using a strategy (50).
Abstract:
A crankshaft (280) has a non-homogenous structure is unitarily formed in a powder metallurgy process with at least two different metallic (32) constituents providing dissimilar characteristics at discrete locations of the structure.
Abstract:
A system and method for initiation and control of passive regeneration (38, 38B) of a diesel particulate filter (34), and the integration of that regeneration strategy with an active regeneration strategy (36) and a strategy (40, 40A, 40B) for inhibiting passive regeneration. Passive regeneration can be initiated by driver actuation of an instrument panel switch while the vehicle is parked with the engine idling provided that certain conditions confirming that the vehicle is parked and the engine is at proper temperature are satisfied. Control of passive regeneration includes a timing function that sets minimum and maximum times.
Abstract:
A set of remote switches (14, 16) located outside the cab of a truck enables service personnel to crank, accelerate, decelerate, and shut off the truck's engine without having to enter the cab. The set of switches are interlocked with controls (12, 13) inside the occupant compartment, including the ignition switch (12) that is used to crank the engine from inside the cab, via an engine control system (11) that uses the state of a switch that senses locking/unlocking of the cab on the chassis engine control system (11) to select either the remote switches or the occupant compartment controls to the exclusion of the other for controlling engine running once the engine has been cranked and started.
Abstract:
In a conventional diesel combustion mode, one or more cylinders (12) of an engine (10) is or are fueled to cause conventional diesel combustion in each such cylinder. The resulting exhaust gas is treated by a diesel particulate filter (36) in an exhaust system (34) before exiting the exhaust system. In an alternative diesel combustion mode, such as HCCI, one or more cylinders of the engine are fueled to create in each such cylinder an in-cylinder fuel-air charge that ignites by auto-ignition as the charge is increasingly compressed. Also a bypass valve (38) is opened so that the resulting exhaust gas bypasses the DPF as the exhaust gas passes through the exhaust system.
Abstract:
A control system (58) for controlling the extent to which a valve (50) selectively bypasses exhaust flow around one of two turbines (18T, 20T) in an engine exhaust system (14). A desired set-point (TCBC_DES) and the actual set-point (EBP_KPG) of operation of the valve are used to develop a set-point error (TCBC_ERR) for closed-loop control of the actual set-point (EBP_KPG). A data value for closed-loop gain (KP, KI) is selected from a schedule (164, 166) based on engine speed (N) and fueling (MFDES). The selected data values of closed-loop gain (KP, KI) and the set-point error data value (TCBC_ERR) are used to create a data value for a closed-loop output (TCBC_DTY_P, TCBC_DTY_I) that is used along with a feed forward parameter (TCBC_DTY_FF) to create a data value for a final output (TCBC_DTY_PIF) for forcing the actual set-point (EBP_KPG) to the desired set-point (TCBC_DES).