JP2017002866A - Liquefied natural gas vehicle - Google Patents

Liquefied natural gas vehicle Download PDF

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JP2017002866A
JP2017002866A JP2015119475A JP2015119475A JP2017002866A JP 2017002866 A JP2017002866 A JP 2017002866A JP 2015119475 A JP2015119475 A JP 2015119475A JP 2015119475 A JP2015119475 A JP 2015119475A JP 2017002866 A JP2017002866 A JP 2017002866A
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natural gas
liquefied natural
lng
heat exchanger
vehicle
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義文 長島
Yoshibumi Nagashima
義文 長島
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Isuzu Motors Ltd
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Isuzu Motors Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Abstract

PROBLEM TO BE SOLVED: To provide an LNG vehicle that can efficiently use vaporization latent heat in LNG vaporization.SOLUTION: The liquefied natural gas vehicle 1 that vaporizes and supplies LNG to an on-board engine 5 to burn the LNG includes: heat exchangers 19, 20 provided in an intercooler 15 and an EGR cooler 18; and a refrigerant circulation circuit 21 for refrigeration cooled by cold of the LNG that is connected to those heat exchangers 19, 20.SELECTED DRAWING: Figure 1

Description

本発明は、液化天然ガスを燃料とする液化天然ガス車に関するものである。   The present invention relates to a liquefied natural gas vehicle using liquefied natural gas as a fuel.

液化天然ガス（以下、ＬＮＧ）を燃料とする大型車については、シェールガス供給拡大に伴う燃料の低価格化により今後のニーズが高まるとともに、海外におけるＬＮＧ車の普及が進んでいる。   With regard to large vehicles that use liquefied natural gas (hereinafter referred to as LNG) as fuel, future needs are increasing due to lower fuel prices associated with the expansion of shale gas supply, and LNG vehicles are becoming increasingly popular overseas.

ＬＮＧ車は、ＬＮＧを燃料として用いるため、圧縮天然ガス（以下、ＣＮＧ）を用いるＣＮＧ車に対して、エネルギー密度が単位体積当たり約３倍と高く、燃料の一充填当たりの航続距離が長く、長距離大型トラックなどに適している。   Since LNG vehicles use LNG as fuel, energy density is about three times higher per unit volume than CNG vehicles using compressed natural gas (hereinafter, CNG), and the cruising distance per fuel filling is long. Suitable for long haul trucks.

特開２０１４−０８０８９２号公報JP 2014-080892 A 特開２００６−１７７２１３号公報JP 2006-177213 A 特開平１０−０４７０８０号公報Japanese Patent Laid-Open No. 10-047080 特開２０１１−１２１５４１号公報JP 2011-121541 A

ところで、ＬＮＧ車は、−１６２℃のＬＮＧを気化させて車載エンジンに送る。このため、ＬＮＧ車は、ＬＮＧを気化させる気化装置を備える。気化装置は、大気とＬＮＧとの間で熱交換を行うことでＬＮＧを安定して気化させる。   By the way, the LNG vehicle vaporizes LNG at −162 ° C. and sends it to the in-vehicle engine. Therefore, the LNG vehicle includes a vaporizer that vaporizes LNG. The vaporizer stably vaporizes LNG by exchanging heat between the atmosphere and LNG.

しかしながら、大気との熱交換でＬＮＧを気化させるため、ＬＮＧの冷熱は利用されることなく大気に放出して捨てられていた。   However, in order to vaporize LNG by heat exchange with the atmosphere, the cold heat of LNG was discharged to the atmosphere and discarded without being used.

そこで、本発明の目的は、ＬＮＧ気化時の気化潜熱を効率的に利用できるＬＮＧ車を提供することにある。   Therefore, an object of the present invention is to provide an LNG vehicle that can efficiently use the latent heat of vaporization during LNG vaporization.

上述の目的を達成するため、本発明は、液化天然ガスを気化させると共に車載エンジンに供給して燃焼させる液化天然ガス車において、インタークーラ及び排気再循環クーラに設けられた熱交換器と、これら熱交換器に接続され液化天然ガスの冷熱で冷却される冷媒の冷媒循環回路とを備えたものである。   In order to achieve the above-described object, the present invention relates to a heat exchanger provided in an intercooler and an exhaust gas recirculation cooler in a liquefied natural gas vehicle that vaporizes liquefied natural gas and supplies it to an on-vehicle engine for combustion. And a refrigerant circulation circuit for a refrigerant that is connected to a heat exchanger and cooled by the cold of liquefied natural gas.

本発明のＬＮＧ車によれば、ＬＮＧ気化時の気化潜熱を効率的に利用できる。   According to the LNG vehicle of the present invention, the latent heat of vaporization during LNG vaporization can be used efficiently.

本発明の一実施の形態に係るＬＮＧ車のエンジンの説明図である。It is explanatory drawing of the engine of the LNG vehicle which concerns on one embodiment of this invention. ＬＮＧ車の概略説明図である。It is a schematic explanatory drawing of an LNG vehicle.

以下、本発明の好適な実施の形態を添付図面にしたがって説明する。   Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

図１及び図２に示すように、ＬＮＧ車１は、ＬＮＧを貯蔵するＬＮＧタンク２と、ＬＮＧタンク２からのＬＮＧを気化させる気化器３と、気化器３で気化されたＬＮＧを減圧するレギュレータ４と、レギュレータ４からのＬＮＧを燃料として駆動される車載エンジン５とを備える。   As shown in FIGS. 1 and 2, the LNG vehicle 1 includes an LNG tank 2 that stores LNG, a vaporizer 3 that vaporizes LNG from the LNG tank 2, and a regulator that decompresses the LNG vaporized by the vaporizer 3. 4 and an in-vehicle engine 5 driven by using LNG from the regulator 4 as fuel.

ＬＮＧタンク２は、ＬＮＧを低温に保持できる低温タンクからなる。   The LNG tank 2 is composed of a low temperature tank capable of keeping LNG at a low temperature.

気化器３は、ＬＮＧタンク２からのＬＮＧを大気との熱交換で昇温させる昇温部６と、昇温部６で昇温されたＬＮＧを後述する熱交換装置７の冷媒との熱交換で気化させると共に気化した天然ガスを昇温させる気化部８とを備える。昇温部６は、気化部８内で流れる水等からなる冷媒がＬＮＧとの熱交換で凍結しない程度の温度（冷媒が水の場合０℃）までＬＮＧを昇温させる。また、気化器３は、エンジン冷却水を冷却するラジエータ９の車両走行方向前側に隣接して配置されており、常に大気が流通するようになっている。   The vaporizer 3 performs heat exchange between a temperature raising unit 6 that raises the temperature of the LNG from the LNG tank 2 by heat exchange with the atmosphere and a refrigerant of the heat exchange device 7 that will be described later. And a vaporizing section 8 for raising the temperature of the vaporized natural gas. The temperature raising unit 6 raises the temperature of the LNG to a temperature (0 ° C. when the refrigerant is water) such that the refrigerant made of water or the like flowing in the vaporization unit 8 is not frozen by heat exchange with the LNG. The carburetor 3 is disposed adjacent to the front side of the vehicle 9 in the vehicle traveling direction of the radiator 9 that cools the engine coolant, so that the air always flows.

車載エンジン５は、吸気を過給する過給機１０と、排気の一部を排気再循環ガス（以下、ＥＧＲガス）として吸気側に戻す排気再循環装置（以下、ＥＧＲ装置）１１と、過給機１０で過給された吸気とＥＧＲガスとをＬＮＧ気化時の冷熱にて冷却する熱交換装置７とを備える。   The in-vehicle engine 5 includes a supercharger 10 that supercharges intake air, an exhaust gas recirculation device (hereinafter referred to as EGR device) 11 that returns a part of the exhaust gas to the intake side as exhaust gas recirculation gas (hereinafter referred to as EGR gas), A heat exchanging device 7 that cools the intake air supercharged by the feeder 10 and the EGR gas with the cold energy at the time of LNG vaporization is provided.

過給機１０は、車載エンジン５の排ガスで駆動されるタービン１２と、タービン１２の駆動力で駆動され吸気を圧縮するコンプレッサ１３とを備える。また、コンプレッサ１３と車載エンジン５のインテークマニホールド１４との間の吸気管１４ａには、吸気を大気との熱交換で冷却するインタークーラ１５が設けられると共に、吸気量を調節するための吸気スロットル１６が設けられている。   The supercharger 10 includes a turbine 12 that is driven by the exhaust gas of the vehicle-mounted engine 5 and a compressor 13 that is driven by the driving force of the turbine 12 and compresses the intake air. An intake pipe 14a between the compressor 13 and the intake manifold 14 of the in-vehicle engine 5 is provided with an intercooler 15 for cooling the intake air by heat exchange with the atmosphere, and an intake throttle 16 for adjusting the intake air amount. Is provided.

ＥＧＲ装置１１は、車載エンジン５の排気側と吸気側を接続する排気再循環通路（以下、ＥＧＲ通路）１７と、ＥＧＲ通路１７に設けられＥＧＲガスをエンジン冷却水との熱交換で冷却する排気再循環クーラ（以下、ＥＧＲクーラ）１８と、ＥＧＲ通路１７に設けられ排気再循環量（以下、ＥＧＲ量）を調節するための排気再循環バルブ（以下、ＥＧＲバルブ）３３とを備える。   The EGR device 11 includes an exhaust gas recirculation passage (hereinafter referred to as an EGR passage) 17 that connects an exhaust side and an intake side of the in-vehicle engine 5 and an exhaust gas that is provided in the EGR passage 17 and cools the EGR gas by heat exchange with engine cooling water. A recirculation cooler (hereinafter referred to as an EGR cooler) 18 and an exhaust gas recirculation valve (hereinafter referred to as an EGR valve) 33 provided in the EGR passage 17 for adjusting an exhaust gas recirculation amount (hereinafter referred to as an EGR amount) are provided.

熱交換装置７は、気化器３の気化部８と、インタークーラ１５に設けられた吸気冷却用熱交換器１９と、ＥＧＲクーラ１８に設けられた排気再循環ガス冷却用熱交換器（以下、ＥＧＲガス冷却用熱交換器）２０と、吸気冷却用熱交換器１９及びＥＧＲガス冷却用熱交換器２０に接続されＬＮＧの冷熱で冷却される冷媒の冷媒循環回路２１とを備える。   The heat exchange device 7 includes a vaporizer 8 of the vaporizer 3, an intake cooling heat exchanger 19 provided in the intercooler 15, and an exhaust recirculation gas cooling heat exchanger (hereinafter, referred to as “EGR cooler 18”). EGR gas cooling heat exchanger) 20 and a refrigerant circulation circuit 21 of refrigerant that is connected to the intake air cooling heat exchanger 19 and the EGR gas cooling heat exchanger 20 and is cooled by the cold heat of LNG.

吸気冷却用熱交換器１９は、インタークーラ１５の吸気入口側に配置されており、吸気を速やかに冷却するようになっている。   The intake air cooling heat exchanger 19 is disposed on the intake inlet side of the intercooler 15 so as to quickly cool the intake air.

ＥＧＲガス冷却用熱交換器２０は、ＥＧＲクーラ１８のガス出口側に配置されており、エンジン冷却水との熱交換で冷却されたＥＧＲガスをさらに冷却するようになっている。   The EGR gas cooling heat exchanger 20 is disposed on the gas outlet side of the EGR cooler 18 and further cools the EGR gas cooled by heat exchange with the engine cooling water.

冷媒循環回路２１は、ポンプ２２と、ポンプ２２と気化器３の気化部８とを接続する第１往路２３と、気化部８と吸気冷却用熱交換器１９とを接続する第２往路２４と、吸気冷却用熱交換器１９とＥＧＲガス冷却用熱交換器２０とを接続する第３往路２５と、ＥＧＲガス冷却用熱交換器２０とポンプ２２とを接続する復路２６とを備える。   The refrigerant circulation circuit 21 includes a pump 22, a first forward path 23 that connects the pump 22 and the vaporizer 8 of the vaporizer 3, and a second forward path 24 that connects the vaporizer 8 and the intake air cooling heat exchanger 19. The third forward path 25 connecting the intake air cooling heat exchanger 19 and the EGR gas cooling heat exchanger 20 and the return path 26 connecting the EGR gas cooling heat exchanger 20 and the pump 22 are provided.

復路２６には、冷媒の流量を調整するための流量調整弁２７が設けられている。流量調整弁２７は、コントローラ２８に電気的に接続されており、コントローラ２８からの電気信号で開度を調節されるようになっている。   The return path 26 is provided with a flow rate adjusting valve 27 for adjusting the flow rate of the refrigerant. The flow rate adjustment valve 27 is electrically connected to the controller 28, and the opening degree is adjusted by an electric signal from the controller 28.

なお、コントローラ２８は、気化器３の出口温度が所定温度となるように流量調整弁２７を制御してもよい。この場合、気化器３の出口または出口近傍の燃料供給路２９に、燃料たる天然ガスの温度を検出する温度センサ３０を設け、コントローラ２８は、温度センサ３０の検出値が所定温度となるように流量調整弁２７を制御するとよい。ここで所定温度は、レギュレータ４の耐寒温度以上に設定するとよい。   The controller 28 may control the flow rate adjustment valve 27 so that the outlet temperature of the vaporizer 3 becomes a predetermined temperature. In this case, the temperature sensor 30 for detecting the temperature of the natural gas as the fuel is provided in the fuel supply passage 29 at the outlet of the vaporizer 3 or in the vicinity of the outlet, and the controller 28 is set so that the detected value of the temperature sensor 30 becomes a predetermined temperature. The flow rate adjustment valve 27 may be controlled. Here, the predetermined temperature may be set to be equal to or higher than the cold resistance temperature of the regulator 4.

また、第３往路２５には、ＥＧＲガス冷却用熱交換器２０を迂回して復路２６に接続されるバイパス路３１が接続されており、バイパス路３１には、開度調節可能なバイパス用流量調整弁３２が設けられている。バイパス用流量調整弁３２は、コントローラ２８に電気的に接続されており、コントローラ２８からの電気信号で開度を調節されるようになっている。バイパス用流量調整弁３２は、開度が大きくされることでＥＧＲガス冷却用熱交換器２０に流れる冷媒の流量を減らし、開度が小さくされることでＥＧＲガス冷却用熱交換器２０に流れる冷媒の流量を増やす。   The third forward path 25 is connected to a bypass path 31 that bypasses the EGR gas cooling heat exchanger 20 and is connected to the return path 26. The bypass path 31 has a bypass flow rate that can be adjusted in opening. A regulating valve 32 is provided. The bypass flow rate adjustment valve 32 is electrically connected to the controller 28, and the opening degree is adjusted by an electrical signal from the controller 28. The bypass flow rate adjustment valve 32 reduces the flow rate of the refrigerant flowing into the EGR gas cooling heat exchanger 20 when the opening degree is increased, and flows into the EGR gas cooling heat exchanger 20 when the opening degree is reduced. Increase the refrigerant flow rate.

なお、バイパス用流量調整弁３２は、バイパス路３１によって迂回される第３往路２５に設けられてもよく、バイパス路３１によって迂回される復路２６に設けられてもよい。この場合、バイパス用流量調整弁３２の開度が大きくなるとＥＧＲガス冷却用熱交換器２０に流れる冷媒の流量が減り、開度が小さくなるとＥＧＲガス冷却用熱交換器２０に流れる冷媒の流量が増える。   The bypass flow regulating valve 32 may be provided in the third forward path 25 that is bypassed by the bypass path 31, or may be provided in the return path 26 that is bypassed by the bypass path 31. In this case, the flow rate of the refrigerant flowing through the EGR gas cooling heat exchanger 20 decreases as the opening degree of the bypass flow rate adjustment valve 32 increases, and the refrigerant flow rate through the EGR gas cooling heat exchanger 20 decreases as the opening degree decreases. Increase.

次に本実施の形態の作用を述べる。   Next, the operation of this embodiment will be described.

車載エンジン５が駆動されると、ＬＮＧタンク２からのＬＮＧが気化器３で気化され、レギュレータ４で減圧され、車載エンジン５に吸気と共に供給される。   When the in-vehicle engine 5 is driven, LNG from the LNG tank 2 is vaporized by the carburetor 3, decompressed by the regulator 4, and supplied to the in-vehicle engine 5 together with intake air.

このとき、ＬＮＧタンク２からのＬＮＧは、まず気化器３の昇温部６に入り、大気と熱交換される。ＬＮＧタンク２からのＬＮＧは、大気圧より十分高圧、かつ、低温であるため、昇温部６内で完全に気化することはない。この後、気化部８に入った気液混合状態のＬＮＧは、冷媒循環回路２１からの冷媒と熱交換されて気化される。このとき、気化部８に流入するＬＮＧは昇温部６で予め昇温されているため、冷媒がＬＮＧとの熱交換で凍結することはない。   At this time, the LNG from the LNG tank 2 first enters the temperature raising unit 6 of the vaporizer 3 and exchanges heat with the atmosphere. Since LNG from the LNG tank 2 is sufficiently higher than atmospheric pressure and low in temperature, it is not completely vaporized in the temperature raising unit 6. Thereafter, the LNG in the gas-liquid mixed state entering the vaporizing unit 8 is vaporized by heat exchange with the refrigerant from the refrigerant circulation circuit 21. At this time, since the LNG flowing into the vaporizing unit 8 has been heated in advance by the heating unit 6, the refrigerant will not freeze by heat exchange with the LNG.

気化部８で熱を奪われた冷媒は、第２往路２４を通って吸気冷却用熱交換器１９に至り、インタークーラ１５入口の吸気と熱交換される。インタークーラ１５入口の吸気は、過給機１０のコンプレッサ１３によって常温より高い温度になっており、冷媒との熱交換で冷却される。   The refrigerant deprived of heat in the vaporization section 8 reaches the intake-air cooling heat exchanger 19 through the second forward path 24, and is heat-exchanged with the intake air at the inlet of the intercooler 15. The intake air at the inlet of the intercooler 15 is at a temperature higher than normal temperature by the compressor 13 of the supercharger 10 and is cooled by heat exchange with the refrigerant.

吸気冷却用熱交換器１９を通過した冷媒は、第３往路２５を通ってＥＧＲガス冷却用熱交換器２０に至り、ＥＧＲクーラ１８出口のＥＧＲガスと熱交換される。ＥＧＲガス冷却用熱交換器２０に至るＥＧＲガスは、吸気冷却用熱交換器１９で昇温された後の冷媒よりも温度が高く、冷媒との熱交換で冷却される。   The refrigerant that has passed through the intake air cooling heat exchanger 19 reaches the EGR gas cooling heat exchanger 20 through the third forward path 25, and is heat-exchanged with the EGR gas at the outlet of the EGR cooler 18. The EGR gas that reaches the EGR gas cooling heat exchanger 20 has a higher temperature than the refrigerant that has been heated by the intake air cooling heat exchanger 19, and is cooled by heat exchange with the refrigerant.

ＥＧＲガス冷却用熱交換器２０を通過した冷媒は、復路２６を通ってポンプ２２に至り、ポンプ２２から吐出されて再び気化器３の気化部８に至る。   The refrigerant that has passed through the EGR gas cooling heat exchanger 20 reaches the pump 22 through the return path 26, is discharged from the pump 22, and reaches the vaporizer 8 of the vaporizer 3 again.

このように、インタークーラ１５に設けられた吸気冷却用熱交換器１９と、ＥＧＲクーラ１８に設けられたＥＧＲガス冷却用熱交換器２０と、吸気冷却用熱交換器１９及びＥＧＲガス冷却用熱交換器２０に接続されＬＮＧの冷熱で冷却される冷媒の冷媒循環回路２１とを備えるものとしたため、従来捨てられていたＬＮＧの気化潜熱を効果的に利用でき、過給後の吸気及びＥＧＲガスの温度を効率的に下げることができる。   Thus, the intake air cooling heat exchanger 19 provided in the intercooler 15, the EGR gas cooling heat exchanger 20 provided in the EGR cooler 18, the intake air cooling heat exchanger 19 and the EGR gas cooling heat. Since the refrigerant circulation circuit 21 is connected to the exchanger 20 and cooled by the cold heat of LNG, the latent heat of vaporization of LNG, which has been conventionally discarded, can be used effectively, and intake air and EGR gas after supercharging The temperature of can be lowered efficiently.

気化器３は、ＬＮＧタンク２からのＬＮＧを大気との熱交換で昇温させる昇温部６と、昇温部６で昇温されたＬＮＧを冷媒との熱交換で気化させる気化部８とを備えるものとしたため、冷媒がＬＮＧとの熱交換で凍結するのを防ぐことができ、ＬＮＧの気化潜熱を安定して利用できる。   The vaporizer 3 includes a temperature raising unit 6 that raises the temperature of the LNG from the LNG tank 2 by heat exchange with the atmosphere, and a vaporization unit 8 that vaporizes the LNG heated by the temperature raising unit 6 by heat exchange with the refrigerant. Therefore, the refrigerant can be prevented from freezing by heat exchange with LNG, and the latent heat of vaporization of LNG can be used stably.

また、冷媒循環回路２１は、気化器３で冷却された冷媒を、吸気冷却用熱交換器１９、ＥＧＲガス冷却用熱交換器２０の順で循環させるものとしたため、過給後の吸気及びＥＧＲガスを効率よく冷却できる。   The refrigerant circulation circuit 21 circulates the refrigerant cooled by the vaporizer 3 in the order of the intake air cooling heat exchanger 19 and the EGR gas cooling heat exchanger 20 in this order. Gas can be cooled efficiently.

１ ＬＮＧ車（液化天然ガス車）
５ 車載エンジン
１５ インタークーラ
１８ ＥＧＲクーラ（排気再循環クーラ）
１９ 吸気冷却用熱交換器（熱交換器）
２０ ＥＧＲガス冷却用熱交換器（熱交換器）
２１ 冷媒循環回路 1 LNG vehicle (liquefied natural gas vehicle)
5 On-vehicle engine 15 Intercooler 18 EGR cooler (exhaust gas recirculation cooler)
19 Heat exchanger for intake air cooling (heat exchanger)
20 EGR gas cooling heat exchanger (heat exchanger)
21 Refrigerant circuit

Claims (3)

液化天然ガスを気化させると共に車載エンジンに供給して燃焼させる液化天然ガス車において、
インタークーラ及び排気再循環クーラに設けられた熱交換器と、これら熱交換器に接続され液化天然ガスの冷熱で冷却される冷媒の冷媒循環回路とを備えたことを特徴とする液化天然ガス車。 In a liquefied natural gas vehicle that vaporizes liquefied natural gas and burns it by supplying it to an in-vehicle engine,
A liquefied natural gas vehicle comprising: a heat exchanger provided in an intercooler and an exhaust gas recirculation cooler; and a refrigerant circulation circuit connected to these heat exchangers and cooled by the cold heat of liquefied natural gas. . 液化天然ガスを貯蔵する液化天然ガスタンクと、前記液化天然ガスタンクからの液化天然ガスを気化させる気化器と、前記気化器で気化された天然ガスを減圧するレギュレータとを備え、前記気化器は、前記液化天然ガスタンクからの液化天然ガスを大気との熱交換で昇温させる昇温部と、前記昇温部で昇温された液化天然ガスを前記冷媒との熱交換で気化させる気化部とを備えた請求項１に記載の液化天然ガス車。   A liquefied natural gas tank that stores liquefied natural gas; a vaporizer that vaporizes the liquefied natural gas from the liquefied natural gas tank; and a regulator that depressurizes the natural gas vaporized by the vaporizer, wherein the vaporizer includes: A temperature raising part for raising the temperature of the liquefied natural gas from the liquefied natural gas tank by heat exchange with the atmosphere, and a vaporization part for evaporating the liquefied natural gas heated by the temperature raising part by heat exchange with the refrigerant. The liquefied natural gas vehicle according to claim 1. 前記冷媒循環回路は、前記気化器で冷却された冷媒を、前記インタークーラに設けられた熱交換器、前記排気再循環クーラに設けられた熱交換器の順で循環させる請求項２に記載の液化天然ガス車。   3. The refrigerant circulation circuit according to claim 2, wherein the refrigerant cooled by the vaporizer is circulated in the order of a heat exchanger provided in the intercooler and a heat exchanger provided in the exhaust gas recirculation cooler. A liquefied natural gas vehicle.
JP2015119475A 2015-06-12 2015-06-12 Liquefied natural gas vehicle Pending JP2017002866A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018168845A (en) * 2017-03-30 2018-11-01 東邦瓦斯株式会社 Gas engine and method for operating the same
JP2019151295A (en) * 2018-03-06 2019-09-12 ヤンマー株式会社 Work machine
US11840140B2 (en) 2019-10-02 2023-12-12 Toyota Jidosha Kabushiki Kaisha Combination vehicle, trailer, and tractor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018168845A (en) * 2017-03-30 2018-11-01 東邦瓦斯株式会社 Gas engine and method for operating the same
JP2019151295A (en) * 2018-03-06 2019-09-12 ヤンマー株式会社 Work machine
US11840140B2 (en) 2019-10-02 2023-12-12 Toyota Jidosha Kabushiki Kaisha Combination vehicle, trailer, and tractor

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