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Diesel engine aftertreatment heating and cleaning hybrid operation

A diesel engine, engine technology, applied in the direction of engine components, engine control, machine/engine, etc., can solve problems such as reducing vehicle fuel economy and drivability

Active Publication Date: 2015-07-29
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Suboptimizing the engine reduces the vehicle's fuel economy and drivability

Method used

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  • Diesel engine aftertreatment heating and cleaning hybrid operation
  • Diesel engine aftertreatment heating and cleaning hybrid operation
  • Diesel engine aftertreatment heating and cleaning hybrid operation

Examples

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Embodiment Construction

[0075] Referring now to the drawings, therein shown are for purposes of illustration of certain exemplary embodiments only and are not intended to limit the same. figure 1 Depicted is a multi-mode powertrain system 100 comprising a diesel engine 10, one or more non-combustion torque machines (e.g., electric machines) 40, a transmission 20, a non-combustion power system 80, and a driveline 90 in a power-split configuration. and controller 5. Transmission 20 is mechanically coupled to diesel engine 10 , torque machine(s) 40 and driveline 90 . In one embodiment, the torque machine(s) are electric machines capable of acting as motors and generators, and the non-combustion power system 80 is a high voltage electrical system. Alternative non-combustion power systems may be employed to similar effect including, for example, pneumatic power systems, hydraulic power systems, and mechanical power systems. figure 1 An alternative arrangement of the powertrain system 100 employing the d...

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Abstract

A method for selecting an engine operating point in a multi-mode powertrain system includes monitoring a desired axle torque based on an operator torque request and vehicle speed. When an aftertreatment device used to purify regulated constituents within an exhaust gas feedstream output from the engine is determined to require an exhaust gas feedstream temperature to be increased to a predetermined temperature, an intrusive engine operation mode is enabled to increase the exhaust gas feedstream temperature to the predetermined temperature. A plurality of engine power is retrieved, wherein each engine power loss corresponds to respective ones of a plurality of intrusive engine operation points each achieving the predetermined temperature of the exhaust gas feedstream. A desired engine operation point is selected corresponding to one of the intrusive engine operation points having a lowest total power loss.

Description

technical field [0001] The present disclosure relates to diesel engines used in hybrid powertrain systems. Background technique [0002] The statements in this section merely provide background information related to the present disclosure. Accordingly, such statements are not intended to constitute an admission of prior art. [0003] The powertrain includes torque-generative devices that provide torque to rotating members. Hybrid powertrains employ at least two torque-generative devices, such as an internal combustion engine and one or more electric machines. Hybrid transmissions are employed and configured to selectively receive and transmit torque through various gear members and change gear states to establish a relationship between a rotational input to the transmission and a rotational output from the transmission. [0004] Diesel combustion engines are known for their ability to produce the required torque using a stoichiometrically lean air-fuel ratio. While lean...

Claims

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Application Information

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IPC IPC(8): F02D29/02F02D41/30F01N9/00
CPCB60W10/06B60W20/1082Y10S903/93B60W10/08B60W10/30B60K6/44B60K6/52B60W30/1882B60W2710/0622B60W2710/0672B60W2710/0694B60W20/16Y02T10/62
Inventor C.E.惠特尼A.H.希普L.斯卡沃恩C.黑斯勒A.列伊
Owner GM GLOBAL TECH OPERATIONS LLC
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