English to German Tech/Engineering Automotive / Cars & Trucks Klimagerät

Siehe Markierung Absatz [0009]!

DESCRIPTION
AUTOMOTIVE AIR-CONDITIONING APPARATUS

Field of the Invention
[0001]
The present invention relates to a automotive air-conditioning apparatus and, in particular, to air-conditioning control during execution of a no idling.

Background Art
[0002]
It is widely known a variety of vehicles running by driving an engine (internal-combustion engine) featuring a no idling system for stopping an operation of the engine, at predetermined timing, while a vehicle is stopping its traveling, from the perspective of energy saving and abatement of environmental pollution.
[0003]
In a vehicle, it is widely spread to induct, on heating, warm air produced by heat exchanging between cooling water of the engine inside of a vehicle compartment for the sake of providing comfortable environment therein. However, on no idling, as a pump circulating cooling water residing in a heat exchanger stops its operation, it nowise replenishes heat storage volume used for heating of warm air. Accordingly, it falls into a situation where temperature of the heat exchanger drops in accordance with time course elapsed from the no idling, eventuating in that it will be unable to blow out sufficiently heated warm air inside of the vehicle compartment.
[0004]
In the vehicle of this kind, as heating goes poor where temperature of warm air drops, with engine stop on no idling, and when ambient air temperature is lower than given temperature, it has been heretofore proposed prohibiting execution of the no idling (see Patent Document 1). Further, because on no idling, it gets into difficulties in sufficiently heating cool ambient air, it has been proposed switching from ambient air induction where ambient air is inducted to heat a vehicle compartment to interior air circulation where air in the vehicle compartment is circulated (see Patent Document 2). Furthermore, when execution of the idol stop is not stopped, it has been proposed switching to interior air circulation where little air volume is supplied, as cold ambient air intrudes thereinto when ventilation is stopped ( see Patent Document 3).

Prior Art Document
Patent Document
[0005]
Patent Document 1: JP Sho58-140442 A
Patent Document 2: JP Sho59-57010 A
Patent Document 3: JP 2001-341515 A

Summary of the Invention
Problem to be Solved
[0006]
Meantime, as heating in the vehicle, warm air in response to temperature in the vehicle compartment is the optimum air volume, and the passenger feels, only at this time, comfortability when the warm air touches passenger’s skin. In the above heating, a passenger feels cool when warm air with temperature lower than that in the vehicle compartment is blown strongly to the passenger’s skin, even though the warm air is warmer as compared with the ambient air. Additionally, there are cases where comfortability is sometimes impaired, and a passenger feels, because of that, something is missing due to little air volume.
[0007]
In short, in the heating on such no idling, when the no idling is not prohibited as is being disclosed in Patent Document 1, there are cases where continuously ventilating constant air volume, regardless of lowered temperature of the warm air, as is being disclosed in Patent Documents 2 and 3, incurs that warm air not suited to room temperature in the vehicle compartment is blown out to a passenger, and consequently the passenger occasionally feels discomfort.
[0008]
An objective of the present invention is to provide a vehicle air-conditioning apparatus which actualizes comfortable heating on no idling.

Solution to the Problem
[0009]
According to a first aspect of the vehicle air-conditioner to solve the above-identified problems, the invention provide a vehicle air-conditioning apparatus, installed in a vehicle, having a function for automatically stop an engine when an automatic stop condition is met, and for restarting the engine when a vehicle restart condition is met, the air-conditioning apparatus comprising: a blower fan for sending air-conditioning air for temperature control to a vehicle compartment; a heat exchanger for heating the air-conditioning air by heat exchanging with cooling water for the engine; a temperature control unit for executing temperature regulation control in the vehicle compartment by regulating a heat exchange rate of the air-conditioning air between the heat exchanger and the air-conditioning air; a temperature detection unit for detecting temperature of the air-conditioning air before heating the air-conditioning air by the heat exchanger; and an air volume control unit for controlling, on heating, during automatic stop of the engine, driving of the blower fan so as ***to run up to air volume*** in response to the air-conditioning air temperature detected by the temperature detection unit.
[0010]
According to a second aspect of the vehicle air-conditioning apparatus to solve the above-identified problems, the invention provide, in addition to the above specific matters of the first aspect, an ambient air flow path to take, as air-conditioning air, ambient air outside of the vehicle compartment, and wherein the temperature detection unit detects temperature of the ambient air to be taken in, as air-conditioning air, through the ambient air flow path.
[0011]
According to a third aspect of the vehicle air-conditioning apparatus to solve the above-identified problems, the invention provide, in addition to the above specific matters of the first aspect, an interior air flow path to take, as air-conditioning air, interior air inside of the vehicle compartment, and wherein the temperature detection unit detects temperature of the interior air to be taken in, as air-conditioning air, through the interior air flow path.
[0012]
According to a fourth aspect of the vehicle air-conditioning apparatus to solve the above-identified problems, the invention provide, in addition to the above specific matters of the second aspect, an interior air flow path for taking, as air-conditioning air, interior air inside of the vehicle, and a flow path switching unit for switching so as to select either the ambient air flow path or the interior air flow path, and wherein the temperature detection unit detects temperature of the air-conditioning air to be taken in though the selected ambient air flow path or the interior air flow path.