Method for starting an internal combustion engine within a hybrid powertrain

A hybrid power and powertrain technology, applied to internal combustion piston engines, combustion engines, engine control, etc., can solve problems such as complex methods

Active Publication Date: 2012-01-11
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this approach is complicated in situations where the motor is multitasking (for example, driving the vehicle with most of the total motor torque and starting the engine at the same time)

Method used

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  • Method for starting an internal combustion engine within a hybrid powertrain
  • Method for starting an internal combustion engine within a hybrid powertrain
  • Method for starting an internal combustion engine within a hybrid powertrain

Examples

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Embodiment Construction

[0051] Referring now to the drawings, wherein the illustrations are for describing some exemplary embodiments only and are not intended to be limiting, figure 1 A system 100 for starting an internal combustion engine 14 within a hybrid powertrain 101 is schematically depicted. The system 100 includes a hybrid control module (HCP) 5 and a hybrid powertrain 101 including an internal combustion engine 14 , a starter motor 102 , an electric machine 56 and a hybrid transmission arrangement 100 . The transmission input shaft 12 rotatably couples the hybrid transmission 10 to the crankshaft of the engine 14 . Starter output shaft 108 rotatably couples starter motor 102 to the crankshaft of engine 10 and transmits torque T therebetween. S . Electric machine 56 is coupled to hybrid transmission 10 and transmits motor torque (T A ). The transmission input shaft 12 is operable to pass input torque (T I ) accelerates the crankshaft of the engine 14, where the input torque (T I ) is ...

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PUM

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Abstract

The invention relates to a method for starting an internal combustion engine within a hybrid powertrain. The hybrid powertrain includes an internal combustion engine, an electro-mechanical transmission and an electric machine. In an engine starting routine, flow control devices located proximate each combustion chamber in the engine initially restrict airflow into the cylinders to allow for a starter motor to rotate the engine at lower expansion and compression torque whereafter rotation of the engine is transitioned to the electric machine.

Description

technical field [0001] The present invention relates to the starting operation of an internal combustion engine within a hybrid powertrain. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] The internal combustion engine in a hybrid powertrain requires a quick start when determined by a control algorithm and based on the operating conditions of the vehicle. High low end torque is required to initially turn and accelerate the crankshaft to acceptable speeds prior to combustion. When the intake manifold pressure is high and the mass of air trapped within the cylinder is high, the initial high low-end torque is largely due to cylinder compression torque. One conventional method of starting an internal combustion engine in a hybrid powertrain is accomplished by using an electric machine to accelerate the engine crankshaft to a speed that initiates combu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D43/00
CPCF02D35/0023F02D41/0002F02D41/18F02D43/00F02D41/062F02D45/00Y02T10/42Y02T10/40
Inventor Q.马R.D.沙夫托M.西蒙J.R.维德乔
Owner GM GLOBAL TECH OPERATIONS LLC
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