《汽車發(fā)動機(jī)性能試驗方法》規(guī)定了汽車發(fā)動機(jī)在臺架上所進(jìn)行的動力性、經(jīng)濟(jì)性及其他重要性能的試驗方法。它適用于汽車用往復(fù)式內(nèi)燃機(jī)，包括四沖程及二沖程、水冷及風(fēng)冷、增壓及非增壓的汽油機(jī)和柴油機(jī)。具體包括下列11項性能試驗。
The Test Method of Automobile Engine Performance stipulates the test method of power, economy and other important performance of automobile engine on the bench. It is suitable for automotive reciprocating internal combustion engines, including four-stroke and two-stroke, water-cooled and air-cooled, supercharged and non-supercharged gasoline engines and diesel engines. It includes the following 11 performance tests.
?、僖话阈云饎釉囼?。評定發(fā)動機(jī)一般起動性能。
(1) General starting test. Assess the general starting performance of the engine.
?、诓裼蜋C(jī)怠速試驗。評定柴油機(jī)怠速穩(wěn)定性。
(2) Idle speed test of diesel engine. Evaluation of idle speed stability of diesel engine.
?、燮蜋C(jī)怠速試驗。評定汽油機(jī)怠速穩(wěn)定性及怠速排放量。
(3) Idle speed test of gasoline engine. To evaluate the idle stability and idle emission of gasoline engine.
?、芄β试囼?。評定發(fā)動機(jī)在全負(fù)荷下的動力與經(jīng)濟(jì)等性能。
(4) Power test. Evaluate the power and economic performance of the engine under full load.
⑤負(fù)荷特性試驗。在規(guī)定轉(zhuǎn)速下，評定發(fā)動機(jī)部分負(fù)荷的經(jīng)濟(jì)性。
_Load characteristic test. The economy of engine partial load is evaluated at specified speed.
⑥萬有特性試驗。評定發(fā)動機(jī)在各種工況下的經(jīng)濟(jì)性，為汽車選用發(fā)動機(jī)提供依據(jù)。
_Universal Characteristic Test. To evaluate the economy of the engine under various working conditions, and to provide a basis for the selection of engines for automobiles.
?、卟裼蜋C(jī)調(diào)速特性試驗。評定柴油機(jī)的穩(wěn)定調(diào)速率。
_Speed regulation characteristic test of diesel engine. Evaluate the steady speed regulation rate of diesel engine.
?、鄼C(jī)械損失功率試驗。評定發(fā)動機(jī)的機(jī)械損失功率。
_Mechanical power loss test. Evaluate the mechanical loss power of the engine.
⑨各缸工作均勻性試驗。為了提高發(fā)動機(jī)的燃油經(jīng)濟(jì)性，節(jié)省能源，減少爆燃及排氣污染，進(jìn)行此試驗。 ⑩機(jī)油消耗量試驗。評定發(fā)動機(jī)在規(guī)定工況下的機(jī)油消耗量。
_Work uniformity test of each cylinder. In order to improve the fuel economy, save energy and reduce deflagration and exhaust pollution of the engine, this test was carried out. _Oil consumption test. Assess the oil consumption of the engine under specified operating conditions.
活塞漏氣量試驗。評定活塞組與缸筒之間的密封性，用來監(jiān)測這對摩擦副的工作情況，以便能較早地發(fā)現(xiàn)拉傷或卡環(huán)等故障。
Piston leakage test. Assess the sealing between the piston group and cylinder to monitor the working condition of the friction pairs, so as to detect the pull or clasp faults earlier.
