摘要:
Disclosed is an exhaust assembly for a construction machine having a revolving upperstructure and an engine mounted on the revolving upperstructure. The exhaust assembly is to be arranged inside the revolving upperstructure of the construction machine, and is provided with an after-treatment device for exhaust gas from the engine and an exhaust pipe for releasing exhaust gas, which has been guided from an outlet port of the after-treatment device, to an outside. The exhaust assembly includes a concave-convex part, which has plural concavities and convexities, is arranged on an inner wall of the exhaust pipe, and extends in a direction of discharge of the exhaust gas.
摘要:
An engine (8) is mounted to a vehicle body by means of vibration isolating mounts (8E), and a support member (15) is mounted to the engine (8). Vibration isolating members (20) are provided between this support member (15) and a mounting bracket (17) mounted to an exhaust gas treatment device (16). Accordingly, even in cases where the engine (8) has generated high-frequency vibrations, these vibrations can be damped by the vibration isolating mounts (8E) and the vibration isolating members (20). In consequence, treatment members constituting the exhaust gas treatment device (16), such as a catalyst, a filter, and a sensor, can be protected from the vibrations of the engine (8). In addition, as the exhaust gas treatment device (16) is provided with the mounting bracket (17), the vibration isolating members (20) can be reliably mounted to the exhaust gas treatment device (16) by means of the mounting bracket (17).
摘要:
The separator for an electrochemical device of the present invention includes inorganic fine particles and a fibrous material or microporous film. Primary particles of the inorganic fine particles can be approximated to a geometric shape, and a difference between a theoretical specific surface area and an actual specific surface area of the inorganic fine particles is within ±15% relative to the theoretical specific surface area, where the theoretical specific surface area of the inorganic fine particles is calculated from a surface area, a volume and a true density of the primary particles of the inorganic fine particles, which are determined through approximation of the primary particles of the inorganic fine particles to the geometric shape, and the actual specific surface area of the inorganic fine particles is measured by the BET method.
摘要:
An hydraulic excavator is provided with an exhaust gas treatment apparatus in an exhaust pipe for effecting the purification treatment of exhaust gas including capturing the particulate matter in the exhaust gas. A space provided for mounting and removing a filter accommodating cylinder (31) is formed between the upstream cylinder (22) and the downstream cylinder (27). In particular, upwardly inclined connecting surfaces (23E and 28E) are provided on flange portions of upstream and downstream cylinders (22 and 27), respectively, and downwardly inclined connecting surfaces (32F and 32G) are provided on upstream side flange portions of filter accommodating cylinder (31). In consequence, a substantially V-shaped insertion space (S) which is gradually enlarged from a lower side to an upper side can be formed between the upstream cylinder (22) and the downstream cylinder (27).
摘要:
Provided is a construction machine, which can suppress a rise in the temperature of a liquid reducing agent in a liquid reducing agent tank. The construction machine is provided, within an engine compartment 6, with plural heat exchangers including an oil cooler 27, a cooling fan 32 arranged opposite these heat exchangers to produce a cooling airflow for promoting heat dissipation from these heat exchanger, and a liquid reducing agent tank 40 for storing a liquid reducing agent to be supplied to an NOx reduction catalyst. The liquid reducing agent tank 40 is arranged upstream of the plural heat exchangers as viewed in a flowing direction of the cooling airflow.
摘要:
A hydraulic circuit for a hydraulic working machine is composed of a main pump 21, a boom cylinder 11 arranged for extension or contraction by pressure oil from the main pump 21, a directional control valve 22 for controlling flows of pressure oil to be fed from the main pump 21 to a bottom chamber 11a and rod chamber 12b of the boom cylinder 11, a control unit 23 for performing a change-over control of the directional control valve 22, a pilot pump 24, a jack-up selector valve 25 for controlling a flow of pressure oil delivered from the pilot pump 24, a flow control valve 26 connected on an upstream side of the directional control valve 22 to a meter-in port of the directional control valve 22 such that the flow control valve 26 can be changed over by the jack-up selector valve 25, and a center bypass selector valve 27 connected on a downstream side of the directional control valve 22 to a center bypass port of the directional control valve 22 such that the center bypass selector valve 27 can be changed over by the jack-up selector valve 25. The hydraulic circuit performs a change-over of the jack-up selector valve 25 in accordance with a bottom pressure on the boom cylinder 11.
摘要翻译:用于液压作业机的液压回路由主泵21,由主泵21的压力油而设置成伸缩的动臂缸11,用于控制从主泵21供给的压力油的流量的方向控制阀22 主泵21连接到动臂缸11的底室11a和杆室12b,用于执行方向控制阀22的转换控制的控制单元23,先导泵24,用于控制的自升式选择阀25 从先导泵24输送的压力油流,连接在方向控制阀22的上游侧的流量控制阀26到方向控制阀22的计量口,使得可以改变流量控制阀26 以及由方向控制阀22的下游侧连接到方向控制阀22的中心旁通口的中央旁通选择阀27,使得中心旁通选择阀valv e 27可以由升降选择阀25切换。液压回路根据悬臂液压缸11的底部压力进行自升式换向阀25的切换。
摘要:
A combustion system which comprises a combustion chamber (1) wherein the supply of air is intercepted and a fluid (L) formed by mixing combustibles with water is supplied, water in the fluid (L) is thermally decomposed, combustibles are burnt, and a gas after combustion is discharged, a fluid storage tank (40) for storing the fluid (L) formed by mixing combustibles with water, a fluid supply section (50) for supplying the fluid (L) in the fluid storage tank (40) to the combustion chamber (1), and a gas recovery section (60) for recovering a gas discharged from the combustion chamber (1). The above combustion system inhibits the formation of nitrogen oxides, since the system is almost free from the contamination of nitrogen in air, and produces an exhaust gas containing hydrogen and carbon dioxide as main components, which results in the production of a clean exhaust gas and east recovery of an exhaust gas.
摘要:
A method for improving the efficiency of power generation in a method for power generation comprising forcefully forming an ascending gas flow channel and a descending gas flow channel within a closed zone with a gas sealed therein, generating a whirling flow by the synergistic interaction of both and rotating a turbine by the whirling flow to generate electric power as well as a device for realizing the same. A whirling flow to rotate fans (3,4) is generated by installing a cylindrical rotor (2) between the ascending gas flow channel and the descending gas flow channel. Optionally, a second cylindrical rotor (12) is further installed between the ascending gas flow channel and the partition wall isolating the closed zone from outside so as to reduce the friction between the ascending gas flow and the descending gas flow. And, the present invention is suitable as a method for power generation by utilizing, for example, a temperature difference occurring in nature.