JPH041629U

JPH041629U -

Info

Publication number: JPH041629U
Application number: JP4188690U
Authority: JP
Priority date: 1990-04-19
Filing date: 1990-04-19
Publication date: 1992-01-08
Anticipated expiration: 2005-04-19
Also published as: JP2506682Y2

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例の吸気温度制御装
置の全体概略図、第２図は本考案の第２実施例の
吸気温度制御装置の全体概略図、第３図は本考案
の第３実施例の吸気温度制御装置の全体概略図、
第４図および第５図は従来の吸気温度制御装置の
全体概略図である。図中、Ａ，Ｂ，Ｃは吸気温度制御装置、Ｇはエ
ンジン排ガス、Ｅは吸入空気、Ｆは冷却媒体、Ｈ
は加熱媒体、１はエンジン、１ａは排気マニホル
ド、１ｂは吸気マニホルド、２は排気管、３はタ
ーボ過給機、４はタービン、４ａは吸入側、５は
吸気管、６はコンプレツサ、６ａは吐出側、７は
空気冷却器、７ａは冷却媒体導入管、７ｂは冷却
媒体排出側、８は空気加熱器、８ａは加熱媒体導
入側、８ｂは加熱媒体排出側、９は冷却媒体導入
管、９ａは分岐部、１０は冷却媒体排出管、１０
ａは冷却媒体バイパス連結部（連結部）、１１は
加熱媒体導入管、１１ａは分岐部、１２は加熱媒
体排出管、１２ａは加熱媒体バイパス連結部（連
結部）、１３は排ガス温度センサ、１４は冷却媒
体バイパス、１５は冷却媒体流量調節弁、１６は
制御装置、１７は加熱媒体バイパス、１８は加熱
媒体流量調節弁、１９は制御装置、２０は制御装
置、ｔ_１は排ガス温度、ｔ_２，ｔ_３は設定温度で
ある。 FIG. 1 is an overall schematic diagram of an intake air temperature control device according to a first embodiment of the present invention, FIG. 2 is an overall schematic diagram of an intake air temperature control device according to a second embodiment of the present invention, and FIG. Overall schematic diagram of the intake air temperature control device of the third embodiment,
FIGS. 4 and 5 are overall schematic diagrams of a conventional intake air temperature control device. In the figure, A, B, and C are intake air temperature control devices, G is engine exhaust gas, E is intake air, F is cooling medium, and H
is a heating medium, 1 is an engine, 1a is an exhaust manifold, 1b is an intake manifold, 2 is an exhaust pipe, 3 is a turbo supercharger, 4 is a turbine, 4a is an intake side, 5 is an intake pipe, 6 is a compressor, 6a is a discharge side, 7 is an air cooler, 7a is a cooling medium introduction pipe, 7b is a cooling medium discharge side, 8 is an air heater, 8a is a heating medium introduction side, 8b is a heating medium discharge side, 9 is a cooling medium introduction pipe, 9a is a branch part, 10 is a cooling medium discharge pipe, 10
a is a cooling medium bypass connection part (connection part), 11 is a heating medium introduction pipe, 11a is a branch part, 12 is a heating medium discharge pipe, 12a is a heating medium bypass connection part (connection part), 13 is an exhaust gas temperature sensor, 14 is a cooling medium bypass, 15 is a cooling medium flow control valve, 16 is a control device, 17 is a heating medium bypass, 18 is a heating medium flow control valve, 19 is a control device, 20 is a control device, t ₁ is exhaust gas temperature, t ₂ , _t3 is the set temperature.

Claims

[Claims for Utility Model Registration] 1. Exhaust gas temperature sensor for detecting the temperature of engine exhaust gas G passing through the exhaust pipe 2 that connects the exhaust manifold 1a of the engine 1 and the suction side 4a of the turbine 4 of the turbocharger 3. 13 and turbo supercharger 3
The discharge side 6a of the compressor 6 and the engine 1
An air cooler 7 that is connected to the intake pipe 5 that connects the intake manifold 1b to the intake manifold 1b and that cools the intake air E by heat exchange with the cooling medium F; the cooling medium inlet pipe 9 and the cooling medium discharge side 7 of the air cooler 7.
A coolant bypass 14 that communicates with the coolant discharge pipe 10 connected to the coolant discharge pipe 10 and the coolant discharge pipe 10 between the air cooler 7 and the connecting portion 10a with the coolant bypass 14 or the coolant introduction pipe. A cooling medium flow rate control valve is provided between a branch part 9a with the cooling medium bypass 14 of 9 and the air cooler 7 and adjusts the amount of cooling medium F passing through the cooler, which is the flow rate of the cooling medium F passing through the air cooler 7. 15 and
The exhaust gas temperature _t1 detected by the exhaust gas temperature sensor 13 and the preset engine exhaust gas G
and a control device 16 that controls the amount of cooling medium F passing through the cooler by adjusting the opening degree of the cooling medium flow rate control valve 15 according to the difference from the set temperature _t2 . Intake air temperature control device. 2. An exhaust gas temperature sensor 13 for detecting the temperature of engine exhaust gas G passing through the exhaust pipe 2 that connects the exhaust manifold 1a of the engine 1 and the suction side 4a of the turbine 4 of the turbocharger 3;
The discharge side 6a of the compressor 6 and the engine 1
An air heater 8 is connected to the intake pipe 5 that connects the intake manifold 1b to the intake manifold 1b, and heats the intake air E by heat exchange with the heating medium H; A heating medium bypass 17 connects the heating medium inlet pipe 11 and the heating medium discharge pipe 12 connected to the heating medium discharge side 8b of the air heater 8, and Media bypass 17
or the branching portion 1 between the heating medium inlet pipe 11 and the heating medium bypass 17.
A heating medium flow rate control valve 1 that is provided between 1a and the air heater 8 and adjusts the amount of heating medium H passing through the air heater 8, which is the flow rate of the heating medium H passing through the air heater 8.
8, the exhaust gas temperature _t1 detected by the exhaust gas temperature sensor 13, and a preset set temperature _t3 of the engine exhaust gas G, the valve opening degree of the heating medium flow rate control valve 18 is adjusted. and a control device 19 for controlling the amount of heating medium H passing through the heater. 3 Exhaust gas temperature sensor 13 for detecting the temperature of engine exhaust gas G passing through the exhaust pipe 2 that connects the exhaust manifold 1a of the engine 1 and the suction side 4a of the turbine 4 of the turbocharger 3;
The discharge side 6a of the compressor 6 and the engine 1
An air cooler 7 that is connected to the intake pipe 5 that connects the intake manifold 1b to the intake manifold 1b and that cools the intake air E by heat exchange with the cooling medium F; the cooling medium inlet pipe 9 and the cooling medium discharge side 7 of the air cooler 7.
A coolant bypass 14 that communicates with the coolant discharge pipe 10 connected to the coolant discharge pipe 10 and the coolant discharge pipe 10 between the air cooler 7 and the connecting portion 10a with the coolant bypass 14 or the coolant introduction pipe. A cooling medium flow rate control valve is provided between a branch part 9a with the cooling medium bypass 14 of 9 and the air cooler 7 and adjusts the amount of cooling medium F passing through the cooler, which is the flow rate of the cooling medium F passing through the air cooler 7. 15 and
An air heater 8 is connected to the intake pipe 5 that connects the discharge side 6a of the compressor 6 of the turbocharger 3 and the intake manifold 1b of the engine 1, and heats the intake air E by heat exchange with the heating medium H. and a heating medium bypass that connects a heating medium introduction pipe 11 connected to the heating medium introduction side 8a of the air heater 8 with a heating medium discharge pipe 12 connected to the heating medium discharge side 8b of the air heater 8. 17 and the heating medium bypass 1 between the air heater 8 and the heating medium bypass 17 of the heating medium discharge pipe 12 or the heating medium bypass 1 of the heating medium introduction pipe 11
a heating medium flow rate control valve 18 that is provided between the branch part 11a with the air heater 8 and the air heater 8 and that adjusts the amount of heating medium H that passes through the heater, which is the flow rate of the heating medium H that passes through the air heater 8; Temperature sensor 13
The valve opening degree of the cooling medium flow rate control valve ₁₅ or the heating medium flow rate control valve 18 is adjusted according to the difference between the exhaust gas temperature _t1 detected by the engine exhaust gas G and the preset temperature _t1 , t3 of the engine exhaust gas G. Adjust and
An intake air temperature control device comprising: a control device 20 that controls the amount of cooling medium F passing through the cooler or the amount of heating medium H passing through the heater.