engine components

Abstract

The invention discloses an engine assembly, which comprises: a radiator; an engine, a cooling water jacket is formed in the engine, the radiator and the cooling water jacket are connected to form an engine cooling circulation waterway between the two, and a second cooling water circuit is arranged on the crankshaft. A flywheel, one end of the crankshaft is provided with a crankshaft extension, and a second flywheel is arranged on the crankshaft extension; the water medium retarder, the water medium retarder is located between the first flywheel and the second flywheel and includes a stator and a rotor, the rotor It can rotate with the extended section of the crankshaft, and the inlet and outlet of the water medium retarder are respectively connected to the engine cooling circulation waterway; the first control valve, the first control valve is set on the engine cooling circulation waterway and connected to the inlet of the water medium retarder The connection is used to conduct or isolate the inlet of the water medium retarder from the engine circulation waterway; the pressure control valve is arranged at the outlet of the water medium retarder. The engine assembly can realize continuous high-power output braking torque of the water medium retarder.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an engine assembly. Background technique [0002] Chinese invention patent (Application No.: 201310481000.3; Publication No.: CN103481871A) discloses a vehicle cooling medium type hydraulic retarder, the retarder is arranged between the flywheel and the crankshaft, and the retarder is connected to the radiator There are inlet pipes and outlet pipes, and throttle valves are arranged on the inlet pipes and outlet pipes, and the throttle valves are used to adjust the medium flow of the corresponding pipelines. [0003] But there is following defect in above-mentioned vehicle cooling medium type hydraulic retarder: [0004] 1) Both the inlet pipeline and the outlet pipeline are equipped with throttle valves for adjusting the medium flow of the corresponding pipelines. The number of valves is large, the cost is high, and the system is complicated; [0005] 2) The inlet pipe and ...

AI Technical Summary

Problems solved by technology

[0006] 3) When the retarder is involved in the work, the clutch needs to be engaged. Due to the characteristics of the clutch itself, it cannot bear a large torque. Therefore, when the crankshaft outputs a large torque, the clutch will be in a slipping state, and the engagement cannot be achieved, resulting in the rotor and the crankshaft. Unsynchronized rotation, limited deceleration effect;

[0007] 4) When the clutch is in a slipping state, the clutch wears a lot and generates a lot of heat, resulting in a short life span of the clutch;

[0008] 5) Since the retarder is arranged between the clutch and the crankshaft, it is necessary to develop an extended crankshaft with a greater axial length on the basis of the original crankshaft. Not only the processing technology of the crankshaft needs to be improved, but also for the flywheel sensor corresponding to the flywheel and Power take-offs, etc. need to be modified to adapt to the new lengthened crankshaft structure, which further increases the cost

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