114) In a four stroke cycle petrol engine, the pressure inside the engine cylinder during the suction stroke is __________ the atmospheric pressure.

115) A diesel engine is __________ as compared to petrol engine, both running at rated load.

116) Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine ?

117) The pressure at the end of compression, in petrol engines, is approximately

118) The sparking in a petrol engine increases pressure and temperature of the products of combustion, but the volume remains constant.