Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and system for improving engine starting

An engine starting and engine technology, applied in combustion engine, engine control, machine/engine, etc., can solve the problem of combustion stability limiting spark retardation, etc., and achieve the effect of precise engine speed control and stable engine acceleration

Active Publication Date: 2016-08-03
CHANGAN FORD AUTOMOBILE CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of speed and torque increase can be reduced by spark retard, but combustion stability and other factors may limit the amount of spark retard that can be applied
Furthermore, the manner in which cylinder air charge is controlled during an engine autostart may not be suitable for a driver-controlled engine start because a different mass may be connected to the engine during an engine autostart compared to a driver-controlled engine start

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and system for improving engine starting
  • Method and system for improving engine starting
  • Method and system for improving engine starting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention relates to control such as figure 1 with figure 2 The intake port throttle of the engine set in the vehicle shown in . In one example, as in image 3 with Figure 4 Port throttles are shown adjusted differently for automatic engine starts and operator-directed engine starts. Can be based on Figure 5 The method in controls the port throttle to provide image 3 with 4 sequence shown in .

[0014] refer to figure 1 , including multiple cylinders ( figure 1 An internal combustion engine 10 of which one cylinder is shown in ) is controlled by an electronic engine controller 12 . Engine 10 includes combustion chamber 30 and cylinder walls 32 with piston 36 positioned therein and connected to crankshaft 40 . Combustion chamber 30 is shown communicating with intake manifold 44 , exhaust manifold 48 via respective intake valve 52 , exhaust valve 54 . Each intake valve and exhaust valve may be operated by an intake cam 51 and an exhaust cam 53 ....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention discloses an engine system and method for improving engine starting. In one example, the engine port throttle is adjusted differently between automatic and driver-initiated engine starts. The system and method may improve engine torque control during engine cranking.

Description

【Technical field】 [0001] The present invention relates to methods and systems for improving engine starting. 【Background technique】 [0002] The vehicle's fuel economy may be improved by stopping the vehicle's internal combustion engine during a vehicle stop. The engine can be stopped to conserve fuel until the vehicle is required to run or accelerate, rather than continuing to consume fuel at idle conditions where a limited amount of useful work can be done. Of course, the vehicle engine can be stopped and started by dedicated driver engine stop and engine start requests. However, vehicle drivers may quickly tire of entering engine stop and start requests. [0003] Another way to save fuel by stopping the engine includes automatically stopping and starting the engine in the absence of dedicated operator initiated engine stop and engine start requests or commands. However, if the engine is automatically stopped and started, precise engine speed control during engine start...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F02D29/02F02D9/10
CPCF02D13/0215F02D13/0265F02D29/02F02B2075/125F02D41/0002F02D2200/602F02D2250/18F02D41/062Y02T10/12Y02T10/40F02D41/021F02D41/064F02D41/065
Inventor T·G·利昂R·W·坎宁安
Owner CHANGAN FORD AUTOMOBILE CO LTD