JP2015175326A5

JP2015175326A5 -

Info

Publication number: JP2015175326A5
Application number: JP2014053885A
Authority: JP
Filing date: 2014-03-17
Publication date: 2017-01-26
Anticipated expiration: 2034-03-17

Description

上記目的を達成するためのエンジンシステムを備えた空調装置の特徴構成は、
ヒートポンプシステムとして冷媒を圧縮する圧縮機を備え、
前記エンジンの軸動力が前記圧縮機の駆動源とされる点にある。
The characteristic configuration of an air conditioner equipped with an engine system for achieving the above object is as follows:
It has a compressor that compresses refrigerant as a heat pump system,
The shaft power of the engine is used as a drive source for the compressor.

Claims

An engine that compresses and burns the air-fuel mixture in the combustion chamber and outputs shaft power;
In an engine system comprising cooling water temperature control means for controlling a cooling water temperature measured by cooling water temperature measurement means for measuring a temperature of engine cooling water for cooling the engine to a target temperature,
First as a target temperature of the coolant temperature during rated operation of operating the engine at a rated value
Cooling water temperature when the target temperature and the oil temperature measured by the engine oil temperature measuring means are lower than the rated operation or when the exhaust gas temperature measured by the exhaust gas temperature measuring means is lower than the rated operation An engine system comprising cooling water target temperature adjusting means for switching and adjusting the second target temperature as the target temperature of the second target temperature in a form in which the second target temperature is higher than the first target temperature.

Oil temperature threshold setting means for setting an oil temperature lower limit threshold in the lower limit region of the engine oil temperature range that does not affect the net thermal efficiency,
When the oil temperature measured by the engine oil temperature measuring unit is lower than the oil temperature lower limit threshold, the cooling water target temperature adjusting unit changes the target temperature of the cooling water temperature from the first target temperature to the second target temperature. The engine system according to claim 1, wherein the engine system is switched to a target temperature.

The cooling water target temperature adjusting means increases from the first target temperature to the second target temperature as the oil temperature measured by the engine oil temperature measuring means deviates to a side lower than the oil temperature lower limit threshold. The engine system according to claim 2, wherein the temperature range is changed and set to a larger side.

An exhaust gas temperature threshold setting means for setting an exhaust gas temperature lower limit threshold as a determination index for determining that the exhaust gas temperature is lower than that during the rated operation;
The cooling water target temperature adjusting means switches from the first target temperature to the second target temperature when the exhaust gas temperature measured by the exhaust gas temperature measuring means is lower than the exhaust gas temperature lower limit threshold. The engine system described.

The cooling water target temperature adjustment means sets the set temperature between the first target temperature and the second target temperature as the exhaust gas temperature measured by the exhaust gas temperature measurement means deviates to a side lower than the exhaust gas temperature lower limit threshold. The engine system according to claim 4, wherein the width is changed and set to a larger side.

It has a compressor that compresses refrigerant as a heat pump system,
The air conditioner provided with the engine system according to any one of claims 1 to 5, wherein shaft power of the engine is used as a drive source of the compressor.