Valve push rod for bimetallic single cylinder diesel
A diesel engine and bimetal technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as power drop, speed fluctuation, automatic shutdown, etc., and achieve the effect of good wear resistance and high strength
Inactive Publication Date: 2012-02-29
江苏鑫田柴油机有限公司
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Problems solved by technology
[0005] Based on this discovery, the applicant developed a double metal valve push rod, which can ideally solve the problems of speed fluctuation, black smoke, power drop and automatic shutdown that occurred during the improvement of the aluminum body of the diesel engine
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[0016] figure 1 and figure 2 It is a schematic diagram of the structure of the valve push rod used in the model 176 single-cylinder diesel engine. The body of the diesel engine is an aluminum alloy body. The valve push rod is a bimetal structure. The rod body 2 is assembled. The steel wear-resistant ball head seat 1 is composed of a connecting sleeve 11 and a wear-resistant ball head 12. An assembly hole 13 is provided in the center of the connecting sleeve 11. The steel wear-resistant ball head seat 1 is assembled The hole 13 is set on both ends of the aluminum alloy rod body 2, and the fit between the assembly hole 13 on the steel wear-resistant ball head seat 1 and the two ends of the aluminum alloy rod body 2 is an interference fit.
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The invention discloses a valve push rod for a bimetallic single cylinder diesel, which comprises steel abrasion-resistant ball seats and an aluminum alloy rod body, wherein the steel abrasion-resistant ball seats are arranged at two ends of the aluminum alloy rod body. Because the conventional steel valve push rod is designed into a structure consisting of the aluminum alloy rod body and the steel abrasion-resistant ball seats, the hardness of the steel abrasion-resistant ball seats can be improved and the properties of high strength and good abrasion resistance of the steel abrasion-resistant ball seats are met by the conventional thermal treatment technology, and the aluminum alloy rod body and an aluminum alloy machine body are in the same deformation; because the valve push rod is long, and the axial length of a steel ball to be ground is low, so that the deformation of the whole valve push rod can be consistent with that of the aluminum alloy machine body, and the valve push rod is prevented from being relatively 'shortened' due to different expansion coefficients of the aluminum alloy machine body and the steel valve push rod; and the valve push rod is an indispensable key part in the process of replacing a cast iron machine body for the aluminum alloy machine body for the diesel.
Description
technical field [0001] The invention relates to parts of a single-cylinder water-cooled diesel engine, in particular to a push rod of the single-cylinder water-cooled diesel engine. Background technique [0002] In a single-cylinder diesel engine, the valve push rod is a power transmission part located between the valve lifter and the valve rocker arm. Push the rocker arm installed in the valve cover to control the opening and closing of the intake valve and exhaust valve on the cylinder head, and input fresh air into the cylinder according to the specified amount to ensure that the diesel in the cylinder can burn normally. In the combustion system of the diesel engine, the opening gap of the intake valve and the exhaust valve directly affects the full combustion rate of the diesel, thereby affecting the emission index of the output power of the diesel engine. [0003] At present, most of the single-cylinder diesel engine bodies in my country are made of cast iron. The valv...
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IPC IPC(8): F01L1/16
Inventor 许强余芳
Owner 江苏鑫田柴油机有限公司
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