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Method for starting engine

An engine and engine starting technology, which is applied in the direction of engine starting, engine components, combustion engines, etc., can solve the problems of engine starting delay, vehicle drivability impact, etc.

Active Publication Date: 2017-02-01
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, engine start can be delayed and vehicle drivability can be affected

Method used

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  • Method for starting engine
  • Method for starting engine
  • Method for starting engine

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Embodiment Construction

[0013] The following description relates to a method for starting an engine. figure 1 A schematic diagram of an example engine system with a multi-stage charge boost system is shown. The multi-stage intake boost system includes a turbocharger and an electric supercharger. figure 2 show start figure 1 A flowchart of an example method of the engine system shown. During a cold start, the method operates the electric supercharger and various actuators to preheat the intake manifold with compressed air. Such as Figure 4 As shown, the electric supercharger can rapidly increase the intake manifold boost temperature within a short response time. image 3 show the basis figure 2 Operation of various actuators and changes in engine operating parameters are shown for the method.

[0014] figure 1 A schematic diagram showing one cylinder of multi-cylinder engine 10 that may be included in an automotive vehicle propulsion system is depicted. Engine 10 may be controlled at least ...

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Abstract

The invention relates to a method for starting an engine. Methods and systems are provided for reliable starting an engine during cold start. In one example, a method may include in response to an engine start request, warming up an intake manifold by compressing intake air via an electric supercharger, and adjusting an intake manifold pressure before starting a first combustion of the engine.

Description

technical field [0001] The present description generally relates to methods for warming up an intake manifold of a vehicle engine to facilitate cold starts. Background technique [0002] Internal combustion engines are often equipped with turbochargers. A turbocharger is driven by the exhaust flow of an internal combustion engine and compresses the intake air flow into the engine for higher power. A multi-stage induction boosting system with a series-stage turbocharger or an electric supercharger (ES) system is employed to improve the boost response of a turbocharged engine. The ES has the advantage of delivering boost pressure faster with a shorter response time than a turbocharger. For example, an ES typically has a response time in the 130-200ms range (idle to 100% duty cycle) compared to a turbocharger's 1-2 second response time. [0003] Ethanol is widely used as a renewable fuel worldwide. However, vehicles fueled with high percentages of ethanol can have difficult...

Claims

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Application Information

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IPC IPC(8): F02N19/02F02M31/04F02D23/00
CPCF02D23/00F02D23/005F02M31/042F02N19/02F02D2200/0406F02P5/1506F02B33/40F02N11/0829
Inventor 肖柏韬H-R·欧萨乐A·N·班克
Owner FORD GLOBAL TECH LLC
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