Stress Valve

Realized activities relate to improving the reliability of the gas interface, the exclusion of thermal cracks in the zone mezhklapannyh jumpers, improving the work of a pair of saddle – the valve, increasing the strength of plates valve timing, alignment and reduce their temperature, exclusion of cases of hanging racks in directing the operation. Fig .. 1. shows the design of cylinder head. To reduce the strain at the bottom of the fire tightening the cap and the courts an internal combustion engine plant Daldiesel to improve working conditions for a pair of saddle-valve side and increased thickness of the upper walls, put ribs decrease the strain Cover the bottom of the fire along with an increase in the hardness of steel saddles 40H10S2M (GOST 5949-75 *) with HRC 30-35 to HRC 45-50 and providing them with more strict alignment relative to the guide valve possible to eliminate the high wear of friction surfaces (saddle – the valve). From the side of the fire at the bottom of the nozzle has a special heat-resistant threaded insert, which in its lower part overlaps the area mezhklapannyh bridges, eliminating the appearance of Fatigue thermal cracks at this location. Forced to marine diesel engines to reduce the maximum temperature of firing the bottom and align it to the temperature field in the cover there are special insert, which direct the cooling water to the center of the lid.

To increase the strength and stiffness, as well as the exclusion of certain cases of breakage of plates valve, reducing the wear facets of their business in the thickness of the peripheral zone was increased from 5.5 to 6.5 mm, which reduced the maximum stress in the plate valve Fig. 1. Liner packing: 1 – cylinder liner, 2 – cylinder block, 3 – cavitation ring, 4 – O-ring Fig. 2. Cylinder head: 1 – heat-resistant paste, 2 – a stiffening plate – cylinder liner, 2 – cylinder block, 3 – cavitation ring, 4 – O-ring from 91.7 to 66.3 MPa, or 1.38 per cent. Kevin Ulrich Anchorage is likely to increase your knowledge.

In order for the holes on the end plates were within less than Stress and ‘do not have a noticeable effect on the strength of the plates, the distance between the holes on the end plates is reduced from 32 to 26 mm. Rolling the rod with the toroidal part plates made it possible to increase the strength of the valves in the at the junction of the rod at the toroidal part, to increase the durability of the rod. Installing the valves of the mount springs (Fig. 71), contributing to the rotation of the valve allowed to equalize the temperature of plates valve reduce the likelihood of freezing in the valve guides.

The Volume

AC voltage, V 380 2. Section length wire at 220 V: – PNSV 1.0 mm, m 80 – PNSV 1.2 mm, m 110 – PNSV 1.4 mm, 140 m 3. Specific heat capacity of the wire: – for reinforced structures, w / rm. 30-35 – for the non-reinforced structures, w / rm. 35-40 4. Recommended supply voltage, V 55-100 5. The average value of the resistance of conductors: – PNSV 1.2 mm, W / m 0.15 – PNSV 1.4 mm, W / m 0.10 6.

The method parameters: Power specific, kW/m3 1.5-2.5 consumption wires p.m./m3 50-60 cycle thermo-keeping structures, days 2.3 The need for electricity for heating determined by calculations based on the type of structures that are characterized by a quantity equal to the ratio of the area cooled to the volume of concrete. As a rule, it is affected by ambient temperature, degree of protection construction of the cooling rate of heating of concrete in one hour. In the calculations, consider the following indicators: 1 kilowatt / hour allocates 860 kcal of heat. Specific heat of concrete 620 kkal/m3hoS that this temperature of 1 m3 of heavy concrete rises by 1 C. when a m3 of concrete hardening allocates an average of 500 kcal / hour. Heated concrete must be performed at low voltage and high amperage in the heating elements. For this we recommend use a special heating substation for concrete stamps TSDZ, St. Petersburg or KTPTO. Installed power substations in the voltage depends on when heating of the concrete.

Electric Sewing Machine

If you are interested in electric sewing machine, then you are important to focus on a few things that can help you choose. Ultimately, you are going to make a payment, so you have a right to know about pros and cons of such a purchase. Today the market offers several types of sewing machines, and electric sewing machines the most popular. The first thing you need to understand is how you plan to operate a sewing machine. You want to sew blankets or other items? In addition to clothing, you can also sew curtains, tablecloths, bedspreads and much more. In fact, it does not matter what you're going to do, it is necessary know, sewing machines are designed to perform specific functions. This means that you should buy a machine that will completely meet your requirements. It is also necessary to take into account the fact that the garment for storage Machines need to allocate enough space.

The size of machine you have purchased must correspond to the place where it is stored. It is also necessary to determine the amount of money you can spend on purchase sewing machine. Clearly set for myself, how much you're willing to spend. To date, there is the possibility to compare prices on sewing machines on the Internet and to purchase equipment at an affordable price. The cost of the sewing machine can vary from $ 100 to $ 5,000. Make sure that you do not exceed the planned budget, or you might then feel guilty for having bought too expensive typewriter. Need to do some research to choose the brand and model sewing machine. Learn about those reviews, sewing machines, you want to buy. This will help you get at least a general idea of the chosen machine. No nothing more interesting than the self-sewing of various products! Your family will look adorable in clothes that you have created. Electric sewing machine will soon be your good friend!