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Liquefied gas fuel supplying apparatus

A fuel supply and liquefied gas technology, applied in mechanical equipment, fuel injection control, fuel heat treatment devices, etc., can solve problems such as driver discomfort, and achieve the effects of reducing electrical power consumption, prolonging life, and improving fuel efficiency

Inactive Publication Date: 2016-05-11
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the fuel pump is driven or the fuel pump is stopped during a stop without the driver's operation, the driving sound (such as noise) is likely to give discomfort to the driver

Method used

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  • Liquefied gas fuel supplying apparatus
  • Liquefied gas fuel supplying apparatus
  • Liquefied gas fuel supplying apparatus

Examples

Experimental program
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Embodiment Construction

[0047] A first embodiment of a liquefied gas fuel supply device embodying the present invention will be described in detail below with reference to the accompanying drawings. In the embodiment, a liquefied gas fuel supply device embodied in an LPG engine system using liquefied petroleum gas (LPG) fuel as a liquefied gas fuel is described.

[0048] As a schematic configuration diagram, figure 1 The liquefied gas fuel supply device in the first embodiment is shown. An LPG engine system installed in a vehicle includes an engine 1 and a liquefied gas fuel supply device 2 that supplies LPG fuel to the engine 1 . The liquefied gas fuel supply device 2 includes a fuel tank 3 for storing LPG fuel in a liquid state. A fuel pump 4 externally connected to the fuel tank 3 is configured to suck in LPG fuel stored in the fuel tank 3 and discharge the LPG fuel to a fuel passage 5 . The fuel passage 5 extends toward the engine 1 . In the first embodiment, the fuel pump 4 is configured to ...

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PUM

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Abstract

The invention relates to a liquefied gas fuel supplying apparatus. The liquefied gas fuel supplying apparatus includes an injector that injects fuel to an engine, a fuel tank that stores the fuel, a fuel pump that pumps the fuel from the fuel tank to the injector, a fuel cooler that cools the fuel that is pumped from the fuel pump to the injector, a fuel temperature sensor that detects a fuel temperature in a pipe, and an ECU. The ECU, during engine operation, estimates the fuel temperature in the pipe after engine stop, based on a detection value detected by the fuel temperature sensor, and performs drive control of the fuel cooler to cool the fuel, when the estimated temperature is higher than a temperature that is evaluated from a predetermined saturated vapor pressure curve.

Description

technical field [0001] The present invention relates to a liquefied gas fuel supply device configured to supply liquefied gas to an engine as fuel. Background technique [0002] Generally, in this technology, liquefied gas fuel has a lower boiling point than diesel, gasoline, etc., and has the property of being easily vaporized. Therefore, the liquefied gas fuel sometimes vaporizes due to temperature rise when it is pumped to the injector by the fuel pump, and the fuel injection characteristics of the injector are likely to become unstable. Therefore, in order to deal with such a problem, for example, the following liquefied gas fuel supply apparatus described in Japanese Patent Application Laid-Open No. 2010-174692 has been proposed. The equipment includes a fuel tank, a high-pressure pump, a supply pump and a fuel cooler. The fuel tank is filled with dimethyl ether (DME) as the liquefied gas fuel. The high-pressure pump pressurizes the liquefied gas fuel from the fuel tan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M21/02F02M31/20F02D41/00
CPCF02M21/0212F02M21/0221F02M21/0245F02M31/205Y02T10/12Y02T10/30
Inventor 辻野睦内田晶人
Owner TOYOTA JIDOSHA KK