In prior art, when automobile engine cold start-up, because the lubricating oil of supplying with friction pair when the previous duty almost all falls back in machine oil chassis (hereinafter referred to as oil sump), therefore, its main friction pairs is in dry friction or critical friction state, this dry friction (friction under non lubricant oil between metal and metal) is ubiquitous, and has data to show, 80% of engine scuffing comes from dry friction. the result of dry friction causes fuel oil, oil consumption to increase, and tailpipe emission increases, and finally also causes engine to be scrapped too early. low temperature in the winter time, particularly engine cold-start under subzero tens degree environment, the dry friction producing than cold start-up is in general sense more serious, and reason is that under low temperature, engine oil viscosity increases, mobility extreme difference, resistance in SR, especially cleaner increases, and machine oil is difficult to smooth and easy each friction pair that evenly enters, when ato unit, must cause the dry friction time to increase, the degree of wear strengthens, and engine is difficult to start. with regard to the engine cold-start pre-lubrication technology of existing solution Properties of Dry Friction Problems, mostly adopt a pre-profit lubricating oil pump in parallel with the former lubricating oil pump lubricating system of engine, before engine start, carry out pre-lubrication with it, former oil filter is that two lubricating oil pump share, its weak point is: first, without independent filter, in pre-lubrication oil delivery system all without heating, therefore pre-lubrication engine oil flow is not smooth, or only in the oil sump of engine, there is preheating device, its preheat function is very limited, the one, heating power is limited, the 2nd, machine oil gross reserves liter more than 30 in oversize vehicle oil sump, energy is heated is little part, adding the pre-lubrication machine oil refluxing after pre-lubrication cannot collect again in oil sump, therefore heat is difficult to concentrate, therefore being difficult to ensure moisten in advance lubricating oil pump normally moves, also just cannot ensure that pre-lubrication closed circuit is unobstructed, be not applicable to the pre-lubrication of the engine cold-start under winter low temperature, second, globality is poor, component distribution is scattered, be not easy to install, detect, safeguard and change, the 3rd, making every effort to of having is easy to use, its electric-control system is associated with former engine starting system closely, cause automatically controlled node to increase, change former car design, increase on the contrary the unreliable factor of former engine starting system and pre-lubrication system, be unfavorable for that user accepts and uses.
Summary of the invention
The technical problem solving:
A kind of engine start preheating device is provided, can overcomes the deficiencies in the prior art, ubiquitous Properties of Dry Friction Problems while effectively solving automobile engine cold start-up; There is effective heater, be particularly useful under winter low temperature, pre-lubrication when automobile engine cold start-up, particularly large-scale standby vehicle, can avoid dry friction, is also conducive to the quick startup of engine simultaneously; Globality is strong, is convenient to install, detects, safeguards and changes, and independence is strong, does not change former car design, and is convenient to selectively install and use.
The technical scheme adopting:
A kind of engine start preheating device, can be connected in parallel with the former lubricating oil pump lubricating system of automobile engine, there is pre-profit lubricating oil pump, filter with thermistor heater, 2# check valve is housed on the flowline of filter, also has connecting line, in oil sump, there is electric heater, it is characterized in that: also there is the secondary oil tank with auxiliary heater; Pre-profit lubricating oil pump, the secondary oil tank with auxiliary heater, the filter with thermistor heater are sequentially assembled into one by communicating pipe, corresponding accessory and seat board, in the import of pre-profit lubricating oil pump and in the machine oil outlet of filter, oil inlet pipe, flowline with pipeline heater are housed respectively, moisten in advance on the oil inlet pipe of lubricating oil pump 1# check valve is housed; Electric control panel is also housed on seat board, and electric control panel is introduced external power, and 1# power switch is housed on electric control panel.
Beneficial effect:
A kind of engine start preheating device, a kind of engine cold-start pre-lubrication system is provided, due to oil sump and the oil inlet pipe that moistens in advance lubricating oil pump all there is heater, and there is 1# check valve, machine oil in oil sump can be drawn out of smoothly, and moistens in advance lubricating oil pump and can not find time, due to the secondary oil tank having with heater, after ensureing that the pre-lubrication machine oil being drawn out of heats up, the filter of band heater again, flowline and 2# check valve enter main oil gallery, therefore be conducive to reduce machine oil circulating resistance and increase filter effect, ensure that pre-lubrication machine oil is unblocked, because filter has heater, can make up in time heat waste, guarantee enters the temperature of the pre-lubrication machine oil of main oil gallery, thereby ensure that machine oil synchronously arrives at each friction pair, and can be to the corresponding site transmission heat of engine, shorten the pre-lubrication time, guarantee pre-lubrication effect, thereby ubiquitous Properties of Dry Friction Problems can effectively overcome automobile engine cold start-up fast time, and be conducive to the startup of engine, in described a kind of engine start preheating device running, ato unit (containing former lubricating oil pump lubricating system) two cover oil lubricating systems are non-interference simultaneously, and after the arranging and can double-safety guarantee that pre-lubrication system is in service or finish of 2# and 1# check valve, the normal startup of engine is in service, and the machine oil in former lubricating oil pump lubricating system can be because of the existence short circuit oil return chassis of pre-lubrication system, starting fast smoothly of pre-lubrication while being particularly useful for automobile engine cold start-up under winter low temperature and engine, for long-term spare vehicles, more like this, energy-conserving and environment-protective, simple in structure, globality is strong, be convenient to standardization makes, and is easy to install, regulates, safeguards convenient operation, do not change former car design, to heater, the alternative application of secondary oil tank.
Detailed description of the invention
Further explanation in detail by reference to the accompanying drawings; 18-engine in figure, 17-main oil gallery;
As shown in Figure 1, 2, pre-profit lubricating oil pump 1, the secondary oil tank 2 with auxiliary heater, the filter 3 with thermistor heater are sequentially assembled into one by communicating pipe 4, corresponding accessory and seat board 5, in the import of pre-profit lubricating oil pump 1 and in the machine oil outlet of filter 3, by each oil inlet pipe 8, flowline 9 with pipeline heater, 1#, 2# check valve 6,7 are housed respectively; Electric control panel 10 is also housed on seat board 5.
Described filter 3 is made up of the independent filter block 11 with organic oil import and export and filter body 12, and the detachable property of filter body 12 is sealed to be packed on independent filter block 11.
Described electric heater, for oil sump 16, adopts 1# electrically heated rod 13, described auxiliary heater, for secondary oil tank 2, adopts 2# electrically heated rod 14,2# electrically heated rod 14 has supporting temperature controller 15, it is made up of temperature-sensitive head and temperature detect switch (TDS), and described temperature-sensitive head is contained in secondary oil tank 2, and described temperature detect switch (TDS) series connection is in the heater circuit of 2# electrically heated rod 14, described auxiliary heater, for secondary oil tank 2, or adopting utilizes the waste heat of vehicle exhaust to heat, basic ideas and structure in technical scheme as disclosed in ZL2013203601519, the version of the heat that wherein said " accumulation of heat hold concurrently heat exchanger " stored by circulating picture-changing heat pipe is in order to heat pre-lubrication machine oil, the outlet that is about to pre-profit lubricating oil pump 1 connects " the machine oil import " of " the second heat exchange unit " in " accumulation of heat hold concurrently heat exchanger " by intermediate duct, " the machine oil outlet " of " the second heat exchange unit " taken over to the machine oil import of filter 3 by intermediate duct, with intermediate duct by secondary oil tank 2 short circuits.
Described thermistor heater, for filter 3, adopting thermistor heating plate PTC sheet is heating element heater, adopt external heated type, technical scheme as disclosed in ZL2012100146875, or adopt body internal heating type, as ZL2011103972904 or the disclosed technical scheme of ZL2010102715481.
Described pipeline heater, for oil inlet pipe 8 and flowline 9, adopts heating wire L series connection thermal cut-off RD and bi-metal temperature controller ZK to heat, technical scheme as disclosed in ZL2009100875695.
Described corresponding accessory refers to that the detachable property of pre-profit lubricating oil pump 1, secondary oil tank 2 and filter 3 is packed in securing member used on seat board 5 and corresponding pipe fitting.
As shown in Figure 3, described electric control panel 10 is introduced external power, and 1# power switch 19 is housed on electric control panel 10, and described 1# power switch 19 can be controlled energising or the power-off of adapted motor and each heater of pre-profit lubricating oil pump 1 simultaneously; Described 1# power switch 19 can cause on driver operation dish, operates in order to scheme; After 1# power switch 19, the 2# power switch 20 of the parallel adapted motor that pre-profit lubricating oil pump 1 is housed, and the shared 3# power switch 21 of each heater.
Described external power can be thought vehicle-mounted former accumulator jar, and accumulator jar also can be independently set.
Described heater, refers to electrically heated rod, thermistor heater, the general designation that pipeline heater and the waste heat with vehicle exhaust heat.
When normal use, 1# check valve 6 connects the machine oil outlet of oil sump 16, the main oil gallery 17 of 2# check valve sending and receiving motivation 18; Described a kind of engine start preheating device---be that the former lubricating oil pump lubricating system of a kind of engine cold-start pre-lubrication system and automobile engine is connected in parallel; Connect respective electrical source switch, engine cold-start pre-lubrication system normally moves, in the time that secondary oil tank 2 inner engine oil temperature rises reach limit value (as 80~100 DEG C), temperature controller 15 moves, automatically the circuit that disconnects 2# electrically heated rod 14 stops heating, when temperature is during lower than limit value, temperature controller 15 moves, and the circuit of automatically connecting 2# electrically heated rod 14 continues heating; In the time time delay cut-off switch being housed in the power supply circuits of the adapted motor of pre-profit lubricating oil pump 1, moistening in advance lubricating oil pump 1 turns round to time delay cut-off switch time delay (as 1~10 minute) and stops, shut down, otherwise manually control voluntarily the time that pre-lubrication system moves; Disconnect respective electrical source switch, engine cold-start pre-lubrication system is out of service.
Selective application is as follows:
The first, in the time of needs low-temperature cool starting
After closed 1# power switch 19 power transmissions, closed 2#, 3# power switch 20,21 simultaneously, at the same time when the machine oil in preheat oil chassis 16 and corresponding pre-lubrication system, start the pre-lubrication to engine, or after closed 1# power switch 19 power transmissions, first closed 3# power switch 21, machine oil in first preheat oil chassis 16 and corresponding pre-lubrication system, after preheating appropriate time, more closed 2# power switch 20, start pre-profit lubricating oil pump 1, engine is carried out to pre-lubrication; Disconnect 1# power switch 19 in good time, stop after pre-lubrication system operation, normal ato unit 18 immediately, or normally carry out in pre-lubrication at pre-lubrication system, ato unit 18, disconnects 1# power switch 19 afterwards more in good time, stops pre-lubrication system operation.
The second, when general cold start-up
After closed 1# power switch 19 power transmissions, only closed 2# power switch 20, directly start pre-profit lubricating oil pump 1 engine is carried out to pre-lubrication, without closed 3# power switch 21, without opening each heater, pre-lubrication machine oil and corresponding pre-lubrication oil delivery system heating are heated up, disconnect 1# power switch 19 in good time, stop after pre-lubrication system operation ato unit 18 immediately; This kind of state is in service, also can be at pre-lubrication system in good time ato unit 18 in service, and this kind of state is in service, secondary 2, oil tank plays tube connector effect, therefore for southern high-temperature area, can cancel each heater completely, and can change secondary oil tank 2 into communicating pipe.
Three,, under particular case, substitute the former lubricating oil pump lubricating system of automobile engine
In the time of low-temperature cool starting, by operation in " first ", only need to disconnect 3# power switch 21 in good time, stop each heater work, and ato unit 18;
In the time of general cold start-up, by operation in " second ", in good time ato unit 18.
The principle of the invention is easy-to-understand, selectively operates using method and is easy to grasp.
The equal independent operating of each heater is independent of each other, and the in-built heating wire L of the thermistor heating plate PTC of filter 3 and oil inlet pipe 8, flowline 9 all works having presetting at temperature of safety guarantee condition.
For oversize vehicle:
Pre-profit lubricating oil pump 1 and motor are selected: 24V0.5~1.5kw, and 1500 revs/min, amount of infusion is 40 liters/min; 2# electrically heated rod 14: power 0.5~3kw, 80~100 DEG C of temperature controlled region.